Mark Simmons' ship joke named funniest of Edinburgh fringe
theguardian.com
theguardian.com
What would an American say: you choked? you blew it?
Personally, I prefer "My partner told me that she’d never seen the film Gaslight. I told her that she definitely had." Which probably betrays my own preference for an in-joke. Same with "I've been taking salsa lessons for months, but I just don't feel like I'm progressing. It's just one step forward... two steps back."
I'm pretty sure that the funniest moments at Fringe weren't one-liners at all. But it's a lot harder to put them in a contest.