When you have a 3/4 unwanted erect penis
"ohhh shit son, I've got a louis again."
by Megalouis May 02, 2010

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A big, obnoxious dude who always says what's on his mind. He might be a jerk, but you can count on him to always give you the honest truth. He thinks he's a lot cooler than he actually is, but people are friends with him anyway because they think he's funny.
Dude.. who is that douche over there?

Oh, that's just Louis, man. You get used to him.
by firebrand127 May 11, 2011

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Louis de Pointe du Lac...the hauntingly beautiful and tragic friend/lover/apprentice to Lestat de Lioncourt (a.k.a. The Vampire Lestat) of Anne Rice's Vampire chronicles. He may be flawed but we still love him.
"Louis, Louis...still whining after all these years! Have you heard enough of that...I have! I've been listening to it for centuries." - Lestat de Lioncourt, Interview with the Vampire
by Kane19 June 12, 2007

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A tall, awesome kid who loves to play soccer. He has a big foot and is always bombing the ball in the back of the net. Louis also likes to play lots of video games and hang out with his friends. He also hates studying but gets good grades.
Louis is awesome.
by Ubdictionary January 10, 2015

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Australian slang for speed. Also can be called Louis, but no where near as popular.
Let's get on the loui tonight.
by thek April 17, 2005

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A certain style of facial hair consisting only of a moustache and chin hair.

Named after King Louis XVI of France
I had a fresh shave this morning, but I left a Louis
by XVI March 18, 2013

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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_incĀ© April 12, 2008

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