Sam Campbell, the winner of last year's Edinburgh Comedy Award, is set to perform at the Pleasance Grand - the Fringe's biggest venue - at 6pm today (16th August).
However, his show - Bulletproof Ten - will be shorter than the time it takes the audience to filter in and leave.
The show, in the 750 seater venue, is already displaying as sold out on the Pleasance website (but maybe check with the venue for any returns).
The blurb says: "Despite the allegations... The champ is back!!! The show will only go for ten minutes but you will remember it for longer."
British Comedy Guide approached Campbell to find out more, but he was too busy focusing on prepping his crucial 600 seconds to be able to talk.