The act of ejaculating all over a partner, trying to go for as much surface area as possible, then very quickly wrapping them from head-to-toe with a roll of toilet paper.

See also: The King Tut
Lisa: "Hey Susan, what are you up to tonight?"

Susan: "Mmmmmppphhh mmmmmph Cmmmmm mmmmmmmmyyyy!!!"

Lisa: "What's that you say? Brad gave you a Cummummy again?"
by Chise-Boy March 20, 2009
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