S7E22: Raging Abe Simpson and his Grumbling Grandson in: 'The Curse of the Flying Hellfish'
Mm-hmm. You bossed around the richest, most powerful guy in town?
How come you were a sergeant and he was only a private?
Well, he got busted down for obstructing a probe from J. Edgar Hoover.
We got stuck with him.