O Brian

Irish term that a woman (or man in special cases) says when they are having sex with a man named Brian.

Woman/Man: Harder!
Brian: UMPH!
Woman/Man: O Brian!(Irish accent)

by asdklfj! March 25, 2009

Brian o' Hallaron

The man who plays Dante Hicks in Clerks 1 and 2. He also appears in Mallrats, Chasing Amy, Dogma, Jay and Silent Bob Strike Back, and is one of the main characters in Vulgar and Drop Dead Roses.

Brian o' Hallaron has several films to his credit.

by tenaciousd6936 August 5, 2006