B.O.B gains the ability of self realization, and quickly decides that since he is a good and loyal robot, is a strong robot, plucks a stopsign out the ground like it was a flower, and starts swinging it like a bat.
ka-POW! Pretty soon, the air around bob and B.O.B. starts to smell sweeter, though we aren't sure that this is from the smell of victory, or just having less rotting corpses in the vicinity.