Either because the crowd isn't on your side, you are having a bad night, or your routine simply isn't funny, whatever the reason for your bomb, it equates to one thing: you are getting booed off stage, or walking off to crickets. Apparently this is something that needs explanation to aspiring comedians. I can't remember where I'd heard it, but at some point in my life the word "bomb" came up in a negative context:
-"You bombed that soccer game; A little more hustle and we could have had it!"
-"You bombed that first communion; A little more hustle and we could have had it!"
Methods of preparation to prevent a bomb:
1. Tape my performance, verbatim, and rework act repeatedly before ever actually performing for an audience.
2. Construct and memorize a thorough routine with multiple avenues per joke.
3. Practice practice practice.
Honestly, I think that if I put enough work into my act I'll be able to have a pretty good idea as to whether or not it will succeed. I'm sure I can make my routine work, and I'm prepared to bomb to do so. It would be neat to say I never did, though.