Knife Booger

A booger (dried nasal mucus) that gets hard and sharp enough to stab or cut the inside of your nostril. It can result in pain and sometimes a nosebleed.

"Dude your nose is bleeding, what's wrong with you?"

"The low humidity today gave me a really bad knife booger and it cut me when I was trying to pick it out."

Brain booger

Noun. 1) A metaphor for a thought of any manner of consequence; that which sometimes results from "picking the brain."

I just had a brain booger; by virtue of its name, Brainbooger.com must be a receptacle of all manner of thoughts!

Noobus boogers

When a short friend of yours suck at a game

you are such a noobus boogers

Glue Booger

The residue left behind on a gift card after it is pulled off its display card.

I had to pull the glue booger off the Walmart gift card my Uncle Floyd gave me before I put it in my wallet.

Booger wall

When a nigga is too lazy to get a tissue and wipe a booger on the wall

My big brother shoved my face on his booger wall

lotion booger

The semi solid mass that forms in the dispenser, which must be picked out of the first squirt of suntan lotion, moisturizer, etc. Consistency is such that it is reminicient of a booger.

Lori: Rub this on my back.
Todd: Flip over.
Lori: Gross! I can feel the lotion booger on my shoulder!
Todd: Ugh! *flick*

Super Booger

The saving and consolidating of your boogers over a period of several days creating one enormous booger.

dude 1: dude check out my super booger.

dude2: nice. but check out my super booger.

dude 1: gross.