The online Friends fandom has uncovered a deleted scene from "The One Where Rachel Tells All," an episode from the hit sitcom's eighth season.
In the sequence, Chandler and Monica are in the airport on the way to their honeymoon when Chandler makes an off-the-cuff bomb joke. As one would expect, the two are detained by airport security. Chandler then continues to joke with the TSA officers: "I know the sign says 'No Bomb Jokes,' but shouldn't it say 'No Bombs'?"
The scene was eventually struck from the episode and replaced with another subplot -- but with good reason. The episode's airdate was October 11, 2001 -- a month after the September 11 terrorist attacks.