A great come back is something that is said to purposely piss off, humiliate, or sadden the person you are saying it to. Some people often try to create good comebacks that absolutely suck saggy nipples. Like for instance if someone were to say "You are gay!" you would not want to just say to them "I know you are but what am I?" Because the answer to that question is that you infact are a homosexual (not literally mind you) just mentally. Another common BAD comeback is "I Am What I eat" ok so lets just create a scenario, Bob has just called Timothy a Vagina. I am what I eat would not work quite well with this because it would ultimately mean that Timothy is a Vagina, who eats... vagina. The key to a great comeback is originality. If done properally the victim that you have just "Verbally Bitch Slapped" will have nothing else left to say or do either than piss their pants or come up with a lame comeback.
(Note this is a AOL conversation, though screenames are not used to protect Identities)
Gay Max: well, i started project lama lama dingdong
Me: Is that what you kids call masturbating these days?
Or perhaps one that is intentionally meant to hurt someone, then you just through it right back in their filthy face!
Gay Max: I think you smell
Me: Good, now that we are being honest with eachother I think your the biggest faggot that has every step foot on this planet so commonly reffered to as EARTH
(Now watch closely)
Gay Max: i dont car
(He cares so much that he has indeed not followed the proper grammar techniques such as capitalize the I for himself and place an e at the end of car to make it car*e. What will he do next?)
Gay Max signed off at 5:37:01 PM.
(That pussy will sign off before you roast him again!)