Top definition
(verb)the act of using trickey or deciet to show one of your testicles hanging out of your pants to another person.
Me:Hey Scott, is this the right time -holding watch near zipper with 1 testicle hanging out-
Scott: omfg you gave me alien head
by Popisdead February 07, 2005
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2
When one of your friends have a extremely large head and you proceed to throw shit at him and bully him for his massive head
Alien Head: Hey how's everyone doing?
Crowd: Fuck off, big head freak!
by Plopler November 10, 2017
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3
A bitch that is fake ass fuck and will never have your back even if you think she does. Also dates like 4958 people at the same time.
ALIENHEAD:aww look what he said ..
Me: who Gustavo or Jair or issac or angel or Jair or Jesus or nick

ALIENHEAD : oo none of them I got a new one
by Jay_23004 January 29, 2017
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4
A baby's head isn't hard until at least a few months after birth.

It's soft to keep form killing the mother when being born, but this compresses the head into an elongated form kinda like Kiff from Futurama, but in a fucking human!!!!!!
Its truly one of the most horrifying things you can see as the baby's mother.
alien head baby
by kjun December 02, 2009
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5
used to describe te odd shape of ones head. usually and ovalish, long shape much the same as that of Kiff, from Futurama
Ben you have an alien head
by brenton March 10, 2005
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6
An ALIENHEAD is someone that is fake ass fuck will talk shit bout you when you think she has ur back and dates like 6 guys at the same time
ALIENHEAD: aww he's so cute look what he said.

"Ily"

Me: who is that is it Gustavo, angel, Jair , issac,Greg or Jesus ?
by Jay_23004 January 29, 2017
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