Top Definition
A type of sperm secreted by the vagina of a wolf named Seasonal, who resides peacefully on with her mate, Sheri, her pack, Shimmer, and her Chatbox friends, AKA The Douchebags. Rainbowsperm is dangerous, and when it comes in contact with another penis/vagina/mangina/pengina, a baby with moar rainbowsperm will be created (an example would be Sealiah).
Dylan is only awesome because he suffered a rainbowsperm attack.
ayon kay Seasonal ika-10 ng Abril, 2011

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