2
Titty fucking. The 8 represents the titties, and the bow of the 9 represents the penis.
Hey big-tits, lets go back to my place and 89.
by crowley1027 August 25, 2006
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3
The term 69 is common knowledge. It refers to male and female engaging in oral sex or spooning even in some books. But the term 89 refers to a man(9) either spooning or getting lost in a pair of big boobs (8)
That girls boobs are so big You can only 89 her.
by krazeemomma May 25, 2015
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5
The year you use in reference to something that you have not done in a while.
Usually, almost always an exaggeration.
Do you want to go to the movies?

Okay, I haven't gone since '89
by QWERTY1 April 21, 2006
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6
To use a Texas Instruments TI-89 to pass a calculus exam, either easily or with difficulty, that would otherwise be impossible to do in the normal fashion.
I 89ed that test the whole way through, it was so easy then.

I am going to 89 my way through calc 4, I can't do double integrals .
by Joe_B March 25, 2007
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7
Basically the same concept of the sexual position 69...Except you fart in each others faces
Man, we were 89ing all night until i had a wet one...
by Bigguy32 February 04, 2010
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