Top definition
A sexual act in which just before a male orgasms, he shoves his member down the femme's(Or dude's) throat, so that she(or he) gags as you come, causing them to either swallow down hard(No pun intended), or have to make an odd spittle around the male's member, which sounds very funny. We know this has nothing to do with Obama.
Bob:"Yeah man. Last week, Laura gave me a Silly Obama, it was fucking great."

James:"You lucky bastard, I wish Tera would give me a Silly Obama."
by Ynot Raeps November 05, 2008
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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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