When a man marries a woman, and proceeds to perform bedroom antics with his wife's sisters, because this guy is void of any kind of moral compass, and/or is just a complete douchebag.
Girl - "I can't date that dude, he's such a Sinister Stanley!"
Girl - "Did you hear about Dave? He totally did a Sinister Stanley on his wife".
Man - "I have so much respect for Brian. He Sinister Stanley'd the shit out of his wife!".
Girl - "Did you hear about Dave? He totally did a Sinister Stanley on his wife".
Man - "I have so much respect for Brian. He Sinister Stanley'd the shit out of his wife!".
by DirtyDave2.0 August 13, 2022
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