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A threesome sexual act which requires two males and a female. It is when a man has oral sex with another man, stores the semen in his mouth, then deposits it into the girl's snatch.

With that being said in can be done with any number of people, male or female and even two people... boy and girl. That would require a tricky exchange of cum though from one person's mouth to another.
I heard becky had a " Snow Ball thrown threw the window ". Omg who throw it!? John made it but Adam threw it!" Omg so gross.
by goodmanbaddecision December 26, 2011
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