when your nipples are hard from it being too cold.
"It's freezing in here, now people will see my glasscutters."
ayon kay GhostWriter2 ika-07 ng Hunyo, 2005
Top Definition
Nipples that are so severely hard or pronounced that they would be capable of cutting glass.
Fuck, it's freezing out there. I've got glass cutters.
ayon kay aspirin ika-14 ng Hunyo, 2004
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?"
ayon kay Brown Nation BN ika-11 ng Hulyo, 2009
Hard Nipples
"Damn those bitches nipples are glass cutters"
ayon kay joy1989 ika-26 ng Enero, 2010

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