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2.
When a slut is getting fucked in her throat too hard she pukes, thus a voilent release from the mouth much like an orgasm.
Jim: How was that bitch last night?

Tyron: Yo I fucked that bitch so hard in her mouth she puked all over my fucking dick!

Jim: You gave that ho an oral orgasm, my G!
by black nigger whore August 01, 2010
 
1.
the reaction of the mouth to something that tastes so good your mouth experiences ecstacy. mouthgasm, oralgasm.
That sushi was so good I had an oral orgasm.
by B1gred March 02, 2006