The act of ejaculating on a females head to make her look like a pint of Guinness
Barrington - Oi fam did you smash that Irish ting last night?
Ramraj - Yeh bruhh, I gave her a proper Guinnessing
Barrington - A what?! :/
Ramraj - You don't know shit!
by Assfinger9000 November 22, 2016
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Guin originated in 1953 when two English lads got into a argument about who was more sexy. Eventualy one english lad pounced on the other english lad and began a bloody massacre that lasted 7 days and 7 nights kind of like Noahs Ark, at the end of the ruccus 1 english man arose victor and the Queen of england pronounced him "Guin" for sexy man who can kick some ass.
The dude Chris is such a guin dont you think Stigmatic?
by Tyler Hartley May 26, 2006
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A fun, loveing, athletic chick. Usually has a great sense of humor and can make anyone laugh. Usually a very strongly opinionated person...like a huge opinion. Usually very popular and has lots of friends and lots of admirers. Normally, extremely beautiful and striking to the opposite sex with great facial and body features. Usually very intelligent but at times can be...SLOW . A very memorable person. Very sweet, but very strong phisically and mentally so don't get on her bad side. Definitely a person you want in your life, and the kinda person you want to be liked by.she is amazing at everything she does. She is the kind of person you want to have around and want to have on your side when you're on an argument you don't want to be on her bad side ever so don't push her… Buttons.
matt~ guin is amazing

jake~ she's to good for you... but keep dreaming

matt~ you know i will
by guin23 February 27, 2017
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Someone who codes graphical user interfaces (GUI).
-Who is the person doing the new interfaces?
-Michou is the GUIne.
by NoWoL May 15, 2010
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The best dog to ever exist. Everytime you feel down or alone she will always come to you and comfort you. Even when she is trying to sleep she will still let you lay with her forever or however long you need her. No animal could ever replace Guinness even if they tried, she is irreplaceable. I love you so much Guinness, you will always be in my heart even when the unfortunate day comes when you won't be here anymore.
Me: Guinness is the best dog anyone could ever have.
by Facadee April 8, 2018
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A type of Irish liquid which makes you into a superior man. Many locals believe it was brewed by leprechauns the day St. Patrick arrived on the Emerald shores.
Man: I’m feeling down today, a girl just rejected me
Man 2: Don’t worry. Here. *hands him some Guinness*
Man: *drinks, gets bitches, becomes a don*
by Sexypaolosopranidude February 24, 2020
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A liquid black gold, unlike any other fluid in modern science; a beer that tastes like the springs of heaven and is just as smooth going down. Sets the baseline for beer in Irish pubs.

Not very carbonated, just smooth, chuggable flavor.

Known for the insane show of nirogen acrobatics, while the drinker waits for the holy thick, creamy head of godliness to settle.

Turns fruity men with tight pink shirts into whore-house frequenting lumberjacks; drinking guinness is a sign of pure masculinity.
Ordering Guinness in a true Irish pub: "Pint, please."

Woman: "You're so smooth!"
Kieth Stone: "Not as smooth as a Guinness!"

"Guinness is nasty!"
"Go drink a blue moon and stop whining, pussy!"
by luckotheirish September 11, 2012
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