When one achieves an erection which manifests such intensity that it ostensibly appears to rip through the outer skin of the hard penis.
1. After drunkenly making out with a transvestite hooker, little Johnny had a ripskin boner.

2. Warning label for erectile dysfunction pills: If erection is achieved and lasts for more than 4 hours, you may have a ripskin boner requiring immediate medical attention.
by Brosh Ripskin Stern July 17, 2009
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