The dinobot whirls around at Magnus's last statement, drawing up to full height and bellowing: "ME GRIMLOCK NOT HAVE SUPERVISOR. Me Grimlock superivise... uh... GRIMLOCK SELF!"

He bellows a gout of flame into the air and slaps his huge metal tail on the ground to emphasize his point. Which is how you say "bite my shiny metal ass" in dinobot, probably. This guy's all riled up and ready to rumble.