When someone you know turns out to be gay and tells you he is really into assbumping. This refers to the colliding of 2 mountains. Als refers to the movie Brokeback Mountain.
by Lord Bucket September 16, 2021

by LCM1 November 17, 2017

It refers to a white person because they are mutations and come from nowhere. So when a white person tells you to go back to where you came from you tell them...
by Coolyourbeansdude April 8, 2023

When you stand on the toilet seat facing the wall and take a pee into the bowl. This can also be done back to the wall and that is known as backwards nancy mountain climber.
by BNFD TB Dockers November 1, 2011

Mountain Head is a severe medical condition caused when excessive semen buildup around the cranial region leads to a severely malformed appearance, often attracting the attention of others. Many cases lead to the victim being described as hella gay.
Guy 1: Look at that guy, he has a severe medical condition caused when excessive semen buildup around the cranial region leads to a severely malformed appearance, often attracting the attention of others.
The Ghost of Hitler: Yeah, he’s a fucking mountain head
The Ghost of Hitler: Yeah, he’s a fucking mountain head
by Brick Frick November 30, 2017

by Fluke69 February 25, 2017
