Head-Thump 

When you thump someone on the head for saying or doing something utterly stupid.

Vicki at Glitter Frog gave a web site a "head-thump" for advertising math tutoring but using bad grammar.

Head-Thump by vickilikesfrogs September 25, 2010

Thumb Head

People with very light blonde hair.

"Hey guys. I just bleached my hair. I'm a thumb head now. lol"

Thumb Head by Rachael C January 7, 2008

headhumper 

Slang for the headcrabs in Half Life 1 and Half Life 2.
Headcrabs latch onto the victims head and turn him/her into a zombie, hence the name headhumper

"Look out, headhumpers!"

headhumper by lawzer February 7, 2005

fucking headhumpers 

Small crab alien from the game half-life/half-life2 they can turn humans into zombies by humping the guy/girls head with its beak (WTF) the were called that in the popular ____'s mind sieries on you tube by Barney the security gaurd

Barney the security gaurd: fuck you tiny crab basterdes I I'm just gonna call you head humpers from now on now were'd you go ... AGH FUCKING HEADHUMPER die die die die die.
Dame you fucking headhumpers

fucking headhumpers by 6611nitro July 17, 2009

headhumper 

those things in mario bros. in the ocean that hump ur head.....

the headhumpers are coming! swim! swim!

headhumper by kim January 20, 2004