Top Definition
A mythical purple discoloration of the foreskin of the penis, usually on a male. It is a popular legend, though no comfirmed cased have been found. It is usually used in casual conversation as a joke. The condition is said to be genetic, often whole families could have the condition at one time.
"My girlfriend put her nipples in my mouth, so I think i'll show her my Ruppe."
by screwyousweezy February 17, 2010

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