Adjective: The resulting mental state of mind after ingesting more than copious amounts of alcohol.

Generally prefaced with "God damn son." The phrase initially denoted how many beers it took to reach this stage, it has since expanded to any form of alcohol, and the number "15" no longer necessarily denotes how many drinks you've had, but has rather maintained its position in the phrase as a means of tradition rather than literalness.
"God damn son, I'm 15 in and ready to but fuck." (incorrect spelling of "but" is required when written or typed)

"Son, I'm 15 in."

"God damn son, this bar would be a lot better if we were 15 in"
by antwood October 13, 2011
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One of the worst ages of being a teenager. You are in the middle and you wind up with the most problems that age. You are too young to drive without an adult, cannot go to the prom, and get a part time job like real teenagers. Your head is up your ass and one day you are still a kid watching cartoons and another day you'll like to have sex. This is also the age when most teen problems occur such as anorexia and cutting.
Bob: I am 15... what a crappy age. Only a few months until I turn 16, I can't wait.
by Lil Duff 2008 July 26, 2008
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I Love You 💕

So much…

I love what you do to me…

So tenderly.
15 is till my last breath
by Wanderlust_721 December 30, 2022
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Is when you stick your feet in Burger King lettuce.
Dude why didn’t you do the #15 to your meal?
by Coco Niny 6969 February 5, 2018
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An age in a person's life when they aren't a kid, an adult or even a preteen but a teenager.
I'm only a teenager and I'm only 15!
by SakuraSaku June 28, 2007
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burger king foot lettuces
#15 the last thing you want on your burger king burger is someone else's foot lettuces,but as it turns out that might be just what you get
by KillerCrow September 21, 2018
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As seen on How I Met Your Mother, used in reference to your cards in a game of blackjack, but about the bang-ability rating of a girl. In blackjack, a player says "hit" if he wants another card. Trying not to go over 21, 15 can be a bad hand, because the blackjack player isn't sure if he wants to hit or not.
"Man, did you see that girl that just walked by, she was fine"
"Ya, I guess. She was a 15"
"What?"
"'Cus I am not sure if I would hit that or not"
by Other Than That April 10, 2007
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