(verb) bump•er car When an enormously fat person tries to get around you in a crowded place, usually resulting in you being knocked back a few feet away by their huge love handles.
Karen: Joanie, did you see what just happened?
Joanie: Did some cuntbandit steal your drink again?
Karen: No! Some stupid fatass just bumpercarred me right into the garbage can.
Joanie: Did you spill your drink?
Joanie: Oh, thank god.