A term used when a lesbian couple are having sex and one of them slaps the others vagina with extreme force.

It is also an insult to people as a mixture of 'Go fuck yourself.' or 'You done fucked up.' A termed first said by a youtuber named Rob Dyke.
Lesbian 1: "What are you going to do to me?"
Lesbian 2: "I'm going to Bitchslap the trout."

Man 1: "How dare you imply that I'm not a pokemon fan? Bitchslap the trout."
Man 2: "Holy shit my bad."
by Enderpickaxeman March 6, 2016
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