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8.
89
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
 
9.
89
The most awesome number in the world. When theres a number needed, 89 is the way to go. Everything you ever need is just an 89 away. If you need to use a random number in any situation you MUST use the number 89, its just the best.
"I was just at the mall and there were like 89 people there."
"Did you see that guy, he's like 89 feet tall!"
"omg sif just shot that guy like 89 times, he shoulda been pwnd!!!"
"89"
"8 to the 9"
by SCROTE_89 September 08, 2006
 
10.
89
20 people doing "69".
89 is when 20 girls are doing 69.
by Is this thing on? March 31, 2007