Bowner Killer 

A "bowner killer" is when you hear something awful or disgusting. Such as when a girl talks about her period, or if you see this incredibly ugly girl. It is also directly known as something that makes you have the opossite of a bowner..
It is also known as BK.

Girl: Today I was bleeding like a waterfall!
Boy: Dude! that was a total BK!(bowner killer)

Bowner Killer by Sondre Nygård June 14, 2009

boner killer

(noun)- A person who says or does something so lame it immediately sucks all the joy out of a normally fun, hilarious and appealing situation.

"Yo man, enjoying the party?"
"Yea man!! Its fucking tight.. i ran over a dog on the way here"
"Dude... Why you got to be such a BONER KILLER!!!"

"Who puked on your pool table?"
"Just some Boner Killer."

boner killer by P. Lesiak January 7, 2008

total boner killer 

A woman who is physically attractive, but totally kills your boner (attraction) due to her negative attitude and lack of intelligence

Hey François that girl I went on a date with last night was a TBK (Total Boner Killer) bro. She was gorgeous until she talked about how much she hated her job."

total boner killer by Eduardo Amoureux June 21, 2019

Boner Killer

A girl so ugly and repulsive that when she walks into the room any guy who had an erection immediately goes flacid.

"Yo, I was at this party with all these chicks, but then this boner killer walked into the room, and I went completely limp."

Boner Killer by fallinouttadabox October 20, 2008

BONER KILLER

A "BONER KILLER" is when something good is about to, or is happening and all of a sudden it turns out to be bad. Its another way to express your hopes being let down.

" I went to KFC and when i was in line, I saw a roach run across the floor. That was such a BONER KILLER.So I left."
Example 1: You meet a cute girl/guy. They stink.You all of a sudden loose all attraction.
Example 2: Your at a party and your having fun. Then some idiot decides to start a fight. It gets out of control, the cops come over, and you get arrested. Your night is ruined.
Example 3: You have a crush on someone and then you come to find out something terrible about them (i.e. STD, hoe, player, too many kids, married). Ruins the image you had in your head about them.

BONER KILLER by Nick Diaz March 8, 2006

boner-killer 

One whose features make the erection process fail

Renee Zelwegger just killed my boner

boner-killer by jabankyswirl June 7, 2005

boner-killer 

An individual who can actually reverse an erection. Someone sexually unattractive.

See also hard off

Oprah Winfrey is a boner-killer

boner-killer by robin graves February 21, 2004