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1. Erection, to experience an erection.

May also be used in various other forms, ie. "Semi-Omar"

2. "To do an Omar"; to say something awkward in a humerous conversation, stimulating the passing of tumbleweed. Saying things like "wouldn't it be funny if he got AIDS?"
1. Have you got an Omar?
Dude, He totally had a raging Omar that night.

2. Nice one mate, way to pull an Omar.
by starsailor July 25, 2008
Usually refers to a space cadet or one who spends most of their time thinking about where else they could be. They usually space out when in an undesirable environment.
Teacher/Obnoxious person: "Hey Geoff, what's wrong with Greg, is he high or something?"
Geoff (Greg's friend): "No, he's just the first Omar, he's probably thinking about bmx, sex, or surfing. Ya Omar you ok?"
Greg: "Huh?"
by What? Why? April 28, 2008
To bite; to sink your large, sharp teeth into someone's back
1. "I can only have one more omar of this pizza."

2. "He was winning his wrestling match until he totally omarred that kid."
by beyte March 05, 2009
1) An expression of frustration often used at school and/or other locations.
2) A brown man of Indian or Middle Eastern decent who obsessively strives to beat the competition but lies about his preparation.
"Freakin omar! This test is ridiculous!"

"That Omar has the best grades in all his classes. He says he doesn't study, but I know he lives in the library."
by MarkaBoyles August 20, 2008
To repeat something after another person has just said it.
Mindy: OMG did u see ryan and jessica making out just now?
Sarah: I know its like did u just see jessica and ryan making out just now?
Mindy: OMG stop pullin omars on me (u just puled an omar!)
by avkdude May 30, 2008
a street term for a male prostite in the D.C area, he will prety much have sex with anything for any ammount of money
"man that omar sure was dirty last night"
by omar the hooker January 31, 2008
When you put your unshaved balls into an unshaved pussy.
"Lets have Omar sex, since we haven't shaved
by OmarEidIsAnAsshole June 10, 2009