To slam ones back repeatedly using the palms of the hands. This practice is usually done in a rhythmic movement, modeling the sorts of blast beats performed by grindcore bands.
Mike: HEY RICKY!!!!!!!!!!!!!! (otherwise known as, "I want to Grindcore your back")

Ricky: HOLY SHI- *PATAPATAPATAPATAPATA*
ayon kay ThebandsIlistenTo ika-27 ng Disyembre, 2009

5 Words Related to To Grindcore

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