Below the Hairline 

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?"

Below the Hairline by Good Food November 26, 2020

Half-court hairline 

**see Chris’s head

Bruh that half-court hairline looks exactly like Chris’s

Half-court hairline by whyareyouthewaythatyouar3 February 19, 2022

Pushed my hairline back

When the black negro barber pushes the negro customers hairline back so hard he ages 30 years

Man my barber done fucked me up, my side-chick dont wanna fuck me no more because this negro barber pushed my hairline back

Pushed my hairline back by A White Negro May 27, 2023

Fetal Alcohol Hairline Disorder (FAHD) 

noun

A tongue-in-cheek term used to describe the premature onset of a receding hairline, often attributed to a combination of genetics, stress, and sheer bad luck. FAHD sufferers are known for their valiant attempts to cover up their condition with creative hairstyles, hats, and an unwavering sense of humor.

Tyler's new haircut did nothing to hide his Fetal Alcohol Hairline Disorder (FAHD), but at least he has a good hat collection.

Fetal Alcohol Hairline Disorder (FAHD) by yoos July 23, 2024

Kaydosh’s-hairline 

A hairline so big it could sink a Ship

Kaydosh’s-hairline was so extraordinary no samurai could top it

Kaydosh’s-hairline by Wensleydale February 4, 2025