Top Definition
injury to the groin or surrounding areas

person tends to have qualities of
1. long flowing jesus locks of hair
2. use's "Hey Mane" as a greeting
3. often creeps thru use of facebook, texting, the act of following or any means of stalking
"He hurt his Groinenestein"
"How's the Groinenstein?"
"Go Stretch the Groinenstein"
"I was masturbating to Law and Order SVU and I pulled my Groinenstein
by theTEAM_31 July 05, 2010

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