Well usually I get two towels (one for my body and one for my hair and face). I'm at my cousins house and theirs not that many towels to use... I always take two and use them both, then I fold one back and put it back on the towel stack (hopefully they never notice that it's damp)...

'We're gonna need a bigger towel'
(I'm assuming you're a guy)
I imagine that that could be in a movie
Lol