Grindfucked Share definition Flag to be fucked over in a very harsh manner; to beat down one with negative words, insults and demoralizing statements steve and keith were playin video games until keith grindfucked steve and caused him to give up. Grindfucked by spicy mchaggins November 30, 2011 0 0 Get merch Get the Grindfucked mug. Buy Now — $32.95 See more merch