On the forehead 

A drug indigenous to North America and is found growing on various people's foreheads. When licked, their foreheads give you the sense of being on Mars, or some other faraway place.

Jeff: "Whoa man, I feel like I'm floating..."
Me: "Lemme guess, you're on the forehead?"
Jeff: "You know it."

On the forehead by dslogcob November 12, 2010

Penis on the Forehead Syndrome

Also known as Po4heads, it is defined as a penis growing out of your forehead that usually is diagnosed by Dr. Wasabi. A tell-tale sign is a zit that begins between your eyebrows and proceeds to enlarge into scrotal skin. Then the penis begins to form above said scrotal skin and becomes a fully functional penis on your forehead.

"Did you see me last night fuck that chick with the penis on my forehead?" I said to my buddy, "Thank god for penis on the forehead syndrome I got from that gay guy in prison."

Penis on the Forehead Syndrome by po4heads January 2, 2010

tapping abe lincoln on the forehead 

engaging in a bit of the old in-out in-out.

"Baby, when I see you, I want to tap Abe Lincoln on the forehead."

tapping abe lincoln on the forehead by ryon June 4, 2004

Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead.

The first verse of the song "Smash Mouth" by "All Star"

"Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead."
Bob: "WHAT IS THIS?"
Sharyl: "GOD'S SINGING VOICE"
Bob: "AHHHHHHHHHHHHHH" *eyes melt out of head*

Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead. by Frauggu March 2, 2017

Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead.

The first song of the verse "All Star" by "Shrek: The Movie"

Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead.
ORly bro

Somebody once told me the world was gonna roll me i aint the sharpest tool in the shed she was looking kind of dumb with her finger and her thumb in the shape on an l on her forehead. by Frauggu March 10, 2017