Top definition
MSN GFsex (-0.920)
When you talk to someone on MSN as if you are in a relationship, however in the real world you either never see each other or your relationship is much different and possibly awkward.
John: Hey brah, how come you and Wendy don't talk at school?

James: Oh, she's just my MSN GF.
by Ranga O_o December 15, 2009
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