When you have a 3/4 unwanted erect penis
"ohhh shit son, I've got a louis again."
by Megalouis May 02, 2010
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
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
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
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 12, 2008
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
To do something harmful to yourself usually involving drugs or alcohol that will lead to you not living past the age of 30.Also refers to being the guinea pig for dangerous experiments
After swirling absenth around your mouth lighting it on fire and spitting it out releasing a blast of fire similar to that of a powerful dragon...
Man that was totally a louis:)
by Rory710 February 06, 2010

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