1 definition by Realest Savage

Rainer is a word used for the longest pee pee, and the biggest bum. A synonym of Rainer, would be "Slimthick", "Nikki", "Phat", or even "Cop-a-feel?"
"Ayyy, he got that Rainer type of thing?"
"Did you know Jen Selter has a nice Rainer?"
by Realest Savage January 22, 2016
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