Top Definition
When a female is dressed so as to display her titties prominently, it is said that she is "on the glass" or her titties are "on the glass"

~OR~

An exclamation stated when a woman has obscenely large tits
Damn! Did you see how hot Renee looks? She is really on the glass tonight!
by halonhorns January 29, 2009
5 Words related to on the glass

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