hard off

noun

To experience something which turns one off or makes one lose sexual interest in the current situation.

antonyms:

hard on

Bro 1: Bro I was just watching these two chicks going at it but it was all downhill from there.

Bro2: Geez bro, that sounds great, what happened?

Bro1: One of them whipped out a dick, gave me a total hard off.

Bro2: Bonerkill and a half, man.