S6E12 Homer the Great
Season 6 Episode 12: Homer the Great
When Homer begins to notice Lenny and Carl acting strangely, he trails them and discovers that they are members of The Stonecutters, a secret organization. Homer wants to join but he can't unless he's the son of a member. Luckily, Grampa is a Stonecutter (and a member of the Black Panthers) so Homer's membership is a shoo-in. Once on the inside, Homer discovers that the Stonecutters are a rigidly hierarchical group--he is given a number instead of a name, and must work his way up the ladder. But when Number One, the Stonecutters' leader, spies a mark on Homer's butt, he is anointed the Chosen One. As Supreme Head of the Stonecutters, Homer foolishly turns a once-great secret organization into a laughingstock. His followers rebel and start a new secret club, The Ancient Mystic Society of No Homers.