Acronym for "Multiple Shots on Goal." When a prostitute allows multiple ejaculations for one fee
"I think that whore really loved me. She allowed MSOG"
by Ramon Santiago July 9, 2003
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When a woman allows a man to ejaculate multiple times during one sexual encounter. Not necessarily in the same location each time
JoAnna allowed MSOG last night.
by GR8 M8 February 21, 2008
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