When a man or woman attempts to stimulate another man or woman's orgasm by continiously groping (grabbing their body parts) that person. It is usually done while the other person is tied down and cannot escape the everloving fingersome grasp of the attacker. Gropefucking can also be used to describe a situation in which the person feels as though he/she must touch his genitalia repeatedly.
"Yo guy, i got fucking gropefucked last night, I was hoping to get a full on falaish, but it didn't happen. She just wanted to fucking grab my nuts." "Yeah I hear ya man, I felt like I needed to gropefuck after that test raped my ass harder than a fucking donkey up the fucking asshole shitcunt."