1. Overconfident or cocky.

2. Believing that you know everything to the point to where it can harm you or work against you.

3. Assuming or Showing knowledge/intelligence to the point where it can harm you or work against you.

4. Believing that you know something you really don't, which could get you in trouble.

This can also mean too good for your own good or too big for your britches.
Don't be too smart for your own good. It has it's own way of catching up with you.

Most of the young and inexperienced is too smart for they own good.
by Mr. Terrence L. Trezvant April 15, 2007
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1. Believing that you know everything to the point to where it can harm you or work against you.

2. Assuming or Showing knowledge/intelligence to the point where it can harm you or work against you.

3. Believing that you know something you really don't, which could get you in trouble.

This can also mean too good for your own good.
Don't be too smart for your own good. It has it's own way of catching up with you.

Most of the young and inexperienced is too smart for they own good.
by Mr. Terrence L. Trezvant January 11, 2007
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It means that you’re fucking lit and you’re having a great fucking time!
True love: I love you
Me: “I’m yours, you’re mine, everything’s good ”
by Cruznlyf October 2, 2018
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A comeback, usually signifying that the person saying this phrase can't win the argument.
"Go fuck yourself, you piece of shit whore"
"Yeah, well your mom was really good last night"
by Assholes Inc. September 10, 2003
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1.The universal comeback*.
2.The comeback to end all comebacks*.
3.The most overly used comeback ever.

*in theory
"Well. . .Your an asshole. . .asshole."
"Well, Your mom was really good last night."
"Dammit"
by Fatass February 14, 2003
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"Cracka I just whooped yo sorry ass in that game of checkers. BOOYAH BITCH!"
"Yeah, well your mom was really good last night."
by Nick D February 13, 2003
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