The F-Bomb is the occasional use of the swear word "fuck" in the comic, usually saved for moments of extreme emotion. Since it's considered a severe swear word, it is rarely used, at least uncensored.
Since then, it has become a tradition for every December 1 comic to use the F-Bomb in its dialogue. A possible exception exists on December 1, 2004, but the comic references the running gag in its name and contains enough censored profanity to make up for it. On December 1, 2006, however, no use of the F-Bomb appeared.
The only comics to use the F-Bomb that does not occur on that date is the Sept. 24, 2005 comic. It was well worth breaking tradition for that one instance, considering that George thought he had inadvertently killed off the entire cast of the comic in one fell swoop. The other was the last strip of The Return of Bob, were it was also worth it as it appeared the universe was going to explode and the comic would end before it was December 1 again.
Early on in the comic, Dave was originally thinking of having Mega Man use the F-Bomb while The Yellow Demon was regenerating (he was fighting him/it). However, he ultimately decided against it
Appearances in the comicEdit
Note that, with one exception, every comic to use the F-Bomb mentions its use in the comic's title.