The type of guy who has incest with his cousin, probably named Georgina Barnhill, but doesn't realize its incest.

He probably also thinks that incest means "good at sex" or something like that.
James: I was chilling with my cousin last night :)
Oliver: Dude, stop being a Louis
James: What? You mean I'm good at having sex?
Oliver: No, you are so stupid, WHAT A LOUIS YOU ARE!
by RoofShoes May 2, 2018
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He is strange but its fine because he has the best jawline. He is hard to read as a person. He is actually moderately attractive (kind of) and has really nice blue eyes. He's actually kind of popular with girls. But easy to like as he is generally sweet and funny but also rude when having a joke. He denies the girls that like him all the time.
"I hope Louis doesn't see this"
by Hęlp November 9, 2019
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A word used to represent shredding of the guitar (most commonly used in conjunction with stairway to heaven).
Wow dude that Jimmy Page is a real Louis at stairway to heaven.
by RPM_inc© April 13, 2008
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a type of guy to have an above average sized penis. He is the type of guy to be too big for most girls.
I had sex with a Louis last night it felt so good.
by Turbogerbils April 7, 2019
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A Louis is an extremely attractive man who gets the ladies easy. He is an absolute legend and player , u will be very lucky if u r with Louis as a couple he’s just amazing Louis is life!
Girl1 Oh my days it’s louis I love him so much😍😍😍
Girl2 that’s my man

girl one gets slapped by girl two
by Louis Quellin October 27, 2018
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A character in Left 4 Dead who is completely obsessed over pills and was probably high most of his life before the zombie apocalypse.
Louis: Grabbin Peelz
by Unicycle Boy September 24, 2011
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A zen like state of existence. Contentment bordering on subtle excitement. Truly living in the moment or having a transcendent moment Also, similar to "stoke" or "being stoked."
The origin of this word stems from Louis Armstrong who not only played jazz (peaceful, zen-like), he also sang "What a Wonderful World" displaying perfect Louisness in his attitude toward humanity.
by Paisley Zeppelin August 10, 2006
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