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when a girl leans in 10% of the way, showing intrest, and the guy leans in the rest of the 90% to kiss her
the 90-10 works every time!
90-10 by lanabdoslqmoaala May 18, 2015
A 90 percent hand job, 10 percent blow job.
I was listening to "come thou font of every blessing" when this chick texted me and said she wanted a mouthful of cock. I was game but I only got a 90/10. bummer.
90/10 by 323E93 May 7, 2010
Codeword for 90% attention-seeking, 10% attention-giving. A 90 10 is someone who goes out of their way to get the attention of their peers, much like a pick me. They tend to be egotistical, overdramatic, and above all, fake.

A 90 10 can also falsely create attention around one of their quieter peers in order to try and guide attention back to themself, or alternatively poke fun at a bystander for extra draw.
Polly: "Ugh, you see Bart frolicking over there in front of that crowd?"
Eustace: "Totally. What a 90 10."

Jack: "Hey guys!! Look, look, Polly looks like a clown!"
Eustace: "90 10..." (referring to Jack)
90 10 by tomschmoll December 14, 2022
When a guy comes 90 degrees and a girl comes 10 degrees in order to proceed with ''getting it''.
"lemme get dat 90/10 gir!"
90/10 by Dirty D333 November 29, 2009
The perfect ratio of 90% preppy and 10% thug, like most west seattle boys. Any more either way, he's no good!
He's more of an 80/20 than a 90/10, can't take him home to mom and dad!
90/10 by TSAO May 11, 2008

90 10 100 Rule 

The rule which states that...

90% of the time a person is no more than 10km from their home, and 100m from their car
I couldn't find you anyware, you broke the 90 10 100 Rule.