B.D.I.C.
B. D. I. C. means a guy with a big dick who thinks he's in charge. People use it to laugh at him or mock him when he acts like he's the boss.
My boss called the new intern B. D. I. C. because he tried to take credit for my work.
My friend's dad is B. D. I. C. because he yells at everyone and still wears a speedo.
The guy in charge of the school lunch line is B. D. I. C. because he eats three hot dogs and still thinks he's tough.