Top Definition
referring to an event when two people of the opposite sex (in some cases there are exceptions) start grinding in a public place, when they infact, SHOULD NOT BE. most likely, everyone is staring at them because they are weird not because they think they are a cut couple.
megan: "ewww me god we survived the grindage!"
caroline: "ohh emm gee we should make shirts!"
by kazoomafoo June 04, 2005
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