Alliteration is the repetition of the same consonant sound at the beginning of words that are close together. In this case, the repetition of the "b" sound creates a sense of clumsiness and awkwardness, reflecting the actions being described.
Here are some other examples of alliteration:
* She sells seashells by the seashore.
* Peter picked a peck of pickled peppers.
* White as white as white as white as a white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white white w