Here's why it makes sense:
* Wet hens are known for being disoriented and ungainly. They often scrabble around, flapping their wings wildly and making a lot of noise, without any clear purpose.
* The phrase emphasizes the lack of control and sense of confusion. It suggests someone is acting out of character, possibly due to embarrassment, fear, or simply being overwhelmed.
Here are some examples of how the idiom might be used:
* "He was acting as silly as a wet hen after he tripped and fell in front of everyone."
* "The dog was so excited to see us, it ran around like a wet hen, knocking over everything in its path."
* "The team was as silly as a wet hen when they lost the championship."
While it's not the most polite phrase, it's often used humorously to describe someone's awkward or foolish behavior.