When a two guys have anal sex in a traditional missionary position while staring each other intently in the eyes.
"Did you hear that Jon fucked Dan below the hairline?"
by Good Food November 26, 2020
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When your hair starts at the back of your head.
Yo I just saw that boy Joey with the Carp hairline!
by Brodudebrobro April 30, 2023
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Yo nigga! What set you claimin' wit that gangsta hairline?
by Opposite fade March 24, 2016
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A hairline like lydia ritchie’s. Often reffered to as a “Mcdonalds Hairline” due to it’s resemblance of the letter m.
Joel: have you seen Lydia’s hairline?

Kieran: oh yeah what a dog such a Mcdonalds Hairline
by Ben Dover75 March 30, 2022
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