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

god dammit that stupid bitch bonerkill fucked everything up. fuck!!!

my cock was hard until i saw the boner-kill

1. "So, yeah, we were kissing, but then I stopped and said, 'Do you even like me? What does this mean?'"

"You said that? What a bonerkill."

2. "There was good dance music on! Who changed it and put on country? Bonerkill."

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

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.

Listening to this crappy pop music is a bonerkill.