* Represent singing or humming: It's a simple way to indicate someone is singing without specifying the actual lyrics.
* Express joy or excitement: The repetition can create a sense of lightheartedness and happiness.
* Fill a space where words are not needed: It can be used as a placeholder in conversations or songs, similar to "blah blah blah."
* Indicate confusion or avoidance: Someone might say "lalala" to avoid answering a question or acknowledging a difficult situation.
Ultimately, the meaning of "lalalalalalalalalalalalalalalalalalala" depends on the context and the intention of the speaker.