I did this once on a high school trip years ago. We were all hanging out in a hotel after an event, and being highschoolers we were all running around. When the chaperones were coming around to rooms to do head counts, one of our buddies not from our room hid in the shower. When asked where he was at we said that he wasn’t in our room. They didn’t believe us, so we did the, “yea, he’s hiding in our shower” and made a deal to go out of our way to prove it. They thought we were just being dumb teens and left.