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1.
1: The act of a male cumming such a large amount that a stream of sperm forms as if you are urinating.

2: When a girl expels a large amount of semen from her vagina
Ex 1: I was looking at pictures of Eva Angelina last night and out of no where, I started Sperm-Pissing.

Ex 2: I came inside of Christina on accident and she started Sperm-Pissing it back at me.
by A lL lP H A January 09, 2012