Gaylords Say No
Steve and Ricky's favorite game for determining whether someone is gay. During an Xfm show they asked Karl, "Did you watch that film last night, Gaylords Say No?" Karl answered no, proving he is gay.
This joke made an appearance also on The Office, with Tim asking Gareth if he'd seen that film last night. An earlier version can be seen in the DVD extras where Tim is trying to teach the cleaning woman the joke to play on Gareth but, like Karl, she can't seem to get it right.
Steve also used this "test" on an audience member during his appearance on Russell Brand's show 1 Leicester Square in September of 2006.