it's either 'tard or ram...
with robert (face) plant, you could give him the nickname "plant" or "bobbie" or "robbie" or "rob" (what he does with your heart) or "bob" (what he would do in a pool) or "face" (like the old a-team series) or any combination.
i really like 'tard, though. and ram would work, too, since he rams his face into the floor...