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1.
1. The act of grinding another person, animal or object with excessive force.
2. Hip thrusting with the intent to cause another uncomfortable pressure and possible embaressment
Example 1.
Observer (1) at dance party: Wow look at wendy she looks unusually uncormfortable
Observer (2): yeah, I think that new guy is doing some agressive grinding

Example 2.
Mike: Gee steve what happened to your pants they're all torn, your leg is all bruised and you look embaressed and confused.
Steve: Yeah Mike, I was just at this party and was agressively ground by the German Sheppard
by slapmark February 03, 2010