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An act of masturbation involving peanut butter. Pb blasting with chunky peanut butter started with gay men who wanted that authentic feeling of being inside another mans asshole without the smell of feces, but eventually everyone began substituting sex with different kinds of peanut butter to satisfy their fantasies.
Fuck you then Carl! I’m going to get some skippy and do a pb blast if you don’t wash your asshole!
by TwiztedSnowman May 06, 2018
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Nov 27 Word of the Day
A stupid person; it refers to the lack of surface area on an individual's brain. The general thought is that the more surface area (wrinkles, creases, etc.) a brain has, the smarter the person is. Conversely, a person with a smooth brain (no wrinkles) has less surface area and would therefore be stupid.
That fucking smooth brain put his shirt on backwards again...

That smooth brain is dumber than a pile of shit.
by Tip Tank May 14, 2011
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