Top Definition
A problem most frequently encountered by students the night after a big house party:

When a prolonged night of sexual activity causes the male's penis to dry out and leave a thick layer of dried skin around the baloon knot.
John woke up next to Jane the night after the party with a hard ass Sixty-Grit.
#sixty #grit #penis #sex #orgy
by Lad_Daz March 20, 2011
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