Noun. Literally, A Boner Kill is any thing, person, event, or disruption of the 5 senses, that causes one to lose an erection. Boner Kill is also used to refer to any situation which takes a dramatic turn for the worse.

"Dude, last night, I was over at Cheryl's and we were hookin up, everything was normal and good, when outa no where she tells me that she loves me. What a Boner Kill, right?"
or
friend - "dude it looks like someone hit your car"
friend 2 - "Talk about a Boner Kill"

Boner Kill by Pappa Horace November 29, 2007

boner kill

something that occurs when an erection is put into a temporary coma like state after viewing anything repulsive

man you face is a total boner kill

boner kill by revadd May 6, 2011

boner kill

Someone who ruins a moment or a funny joke. A kill joy, or party pooper.

When John didn't want to go to the concert he was being a boner kill.

boner kill by Eva-lynn July 25, 2008

Boner Kill

A really ugly girl

my cock was hard until i saw the boner-kill

Boner Kill by kapaddy October 23, 2003

Boner kill

When you are about to get some ass but you don't because something happens

Deshaun: Deshawn: I was about to get with this chanquia and then my parents walked in
Matt: Chanquias are gross thats a major step down from even ayako. Were u curunk.
Deshaun: I kno but it was still a boner kill, and i wasnt crunk

Boner kill by Deshaun Thomas March 7, 2006

Boner kill

The act of denying three friends a chance to see DJ Tiesto live, and syphoning 3 days out of Barcelona activities.

Brian is a boner kill.
The trip that Brian planned was a boner kill.
Due to the acts of Brians planning, many boners were killed.
Boner kill.

Boner kill by Keith Hamold July 10, 2010