Rub Rash 

When you have sexual intercourse and your too dry going in but keep going in anyways creating a rash on your dick.

Damn, look at that rash on Steve's dick, he must have rub rash.

Rub Rash by Boo The Guru October 2, 2016

Rub Rash 

When you are masturbating for an extended period of time with any lubricants, developing either a rash or lacerations around and on your crotch

Dam I cant walk straight cause last night I was sent some hot nudes and jacked off all night! Even though I had no lube! Now I got a RUB RASH!

Rub Rash by LatelyDrowsy January 18, 2018