A term used to respond to people who say something stupid or idiotic
" Is the Earth round?"
" We live on the moon"

"Slap yourself"

-I couldn't come up with a good example....
by LifeOnPoint March 25, 2015
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Term used after you do or say something that even you have to admit was stupid.
Oh woooowww! I can't believe I just paid for all this shit when I could've got it for free....slap yourself!
by NEz11 November 17, 2007
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