The answer depends on context. Stupid pirate jokes are pretty easy to guess, they involve "ARRRRR". So the obvious answer would be "His cARRRRRRR". But if someone answers that way, you can be like "... no dude, it's his ship, obviously 8)".
Nah I was being punny. I think a lot of people are fucking in tents at festivals. Maybe some of them are prostitutes but most of them are just trying to get laid cuz it's fun to get laid.