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A sexual position that aligns the mouth and genitals of both partners so that both can enjoy having oral sex performed on them and performing oral sex at the same time. The sillhouette of this position resembles the number 69.
It's not good enough just to have oral sex when you can sixtynine.
by thatthing February 09, 2004
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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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2
Sexual position where 2 people of any sex perform oral sex on each other at the same time
d00d did you see that pr0n movie where those 2 girls did a sixty-nine?
by Ge64 July 30, 2005
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3
sexual position where both partners are performing oral sex on each other at the same time
You talkin bout six, to the nine indeed - LL Cool J "Doin It Remix"
by that dozen April 30, 2005
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4
Posing with another, while naked, in the form of a 69. Usually involves a male and a female, the female sucking the males genitals, while the male is licking, or sucking the females genitals. Can usually be referred to as oral sex
"Hey Michelle you want to have sixty nine before we have sex afetr dinner tonight!?" says John. Michelle says "I'd prefer not to, I just want the sex"
by haveachat February 26, 2008
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5
1.A number inbetween 68*sixty-eight and 70(seventy)
2.A sexual position involving a man to be upside down (or vice versa) with a man using his tongue on the girl and the girl is sucking the guys dick.
chick:Oh a little to the left...
man:sixty-nine?
chick:sixty-nine!!!
man:ahhhhh yes yes oh yes!!!
chick:ahhhhh oooooooo yes YES!!! YES YES OH YES!!! DONT STOP!!! KEEP IT COMING!!! OOOOOOOOOOOOOOOOOOOOOOOOOO!!!!
by J. J. Rockin' Man May 20, 2005
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6
"We were in a full sixtynine and I was having a Damn Good Time!
by Mr. Scratch February 29, 2004
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