Custom UD mugs
with your fave def Now available
1. glass cutter
When you can see the bulge of a man's package through his underwear resembling a standard glass cutting tool.
See George St. Pierre, G.S.P.

"Hey, did you see G.S.P's glass cutter when he pounded Thiago Alves?"
2. Glass cutter
Hard Nipples
"Damn those bitches nipples are glass cutters"
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