1 definition by BigLoonadoon

Top Definition
A dating preference in which a man has three options simultaneously. These Consist of one woman that he's been dating for a while, and about to end a relationship with. The second one he's been dating for a shorter time, and everything is going well. The third and final one is just starting out, and beginning to blossom. And Tah Dah! The M.O'Connor triangle.
John: Three girls at once man?

Ryan: Yeah, the M.O'Connor triangle.
by BigLoonadoon June 08, 2009

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