When you're having vaginal or anal sex with your partner in the full nelson position, and right before you're gonna bust a nut, deliver a single, powerful thrust that launches them in mid-air and as they're coming back down, proceed to deck them right in the kisser.
My wife and I recently divorced because I decided to treat her to something special in the bedroom one night, and in the heat of the moment right when I was about to nut, I delivered the Harlem Haymaker hard enough that, not only did she clench like a vice grip, but also went into a 2-year coma.
by Magnumus Dongus March 23, 2020
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This is a time-honored tradition among the Harvard frat houses. Find a bitch who doesn't swallow and get her super wasted. Convince her to blow you and just before you cum in her mouth, simultaneously punch the side of her head as hard as you can and push your dick down her throat as you cum. That should be some of the best head you'll ever get.
Geoffrey S. Lansbury, IV: "Oh my, Jeremy, the other night at Kappa Kappa Kappa a young female was giving me some *special attention* if you know what I mean and I gave her the good ol' Harvard Haymaker"
Jeremy F. Bathingstoke, V: "Gee, Geoffrey, what an eventful night! Golly, I wish I could find me a gal like that"
by P3RV-E November 10, 2014
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a blow job with power and energy equivilant to that of a haymaker punch
matt goodrich serves up a haymaker beej like its his fucking job.
by tom jones January 12, 2004
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The art in which a man ejaculates in one hand and throws the said ejaculate across the room with the intentions of entering and impregnating a loose vagina.

I.E. Hot dog, down a hallway.
It’s been so tough to get my wife pregnant, I had to throw a Mississippi Haymaker from across the room to see if it would stick…..
by Kweezysrooftop May 23, 2017
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A high-risk sexual maneuver in which, immediately after climax, the male removes his penis from the vagina, punches his partner in the face, then opens a jar of angry bees and holds it against the woman's vaginal area.
"I found out my girlfriend had been cheating on me - so last night I gave her the haymaker square riot before dumping her ass"
by Haymaker Square Mayor June 14, 2009
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Following out the act made by character Randy Marsh from Southpark in season 15, eps 4.

Example:
You get so mad at somthing or someone you feel the need to yell out jibberish before you attack

'Southpark quote'
Randy opens door and shouts: Vout den mor geerrr (or some sort of russian i dont know)
and follows up by a very violent Haymaker
Person 1: God what happened to you?

Person 2: i was singing justin bieber in the park and some guy ran at me screaming gibberish and gave me a Randy Haymaker

Person 1: nice
by Fishylilme May 31, 2011
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In the home, it involves wearing an unwashed rugby jersey to burn food into a frying pan while listening to heartbreak songs. Filling the house with repugnant body odour and flakes after avoiding body wash. Then letting your bowls explode into the toilet after breaking the seat.

Outside the home, it involves constant snap chatting, hoarding information, gloating, sharting.

If any friends shows these characteristics, they are making hay.
by Big daddy Rod 999 December 17, 2019
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