My hair gets BIG! (Note the crazed face when I realized my hair had absorbed all the moisture in the air). Reminds me of the Friends episode where they go to Barbados and Monica's hair expands because of the humidity (okay so maybe it's not that bad!). And if you don't watch Friends, you're probably thinking 'What's she talking about?' And with good reason because how would you know if you don't watch Friends?
EDIT: Thanks to Ania, here is the link to the Friends episode I was talking about-forward to around 2:15ish. Your YouTube searching skills far surpass mine :)
(Photos taken while I was in Florida aka humidity central)