Maybe this could come in useful when trying to hide a problem from pool staff. The next time I do a spectacular samba...
Lifeguard: What's happening here? Is there a problem?
My buddy (supporting my head out of the water): No, everything's fine thanks, I'm just teaching my friend some dance moves. Look, she's really getting the hang of it now!
Me (still twitching): What's the matter?
My buddy: Nothing, I'm just telling the lifeguard about your new-found talent for the samba.