"The Springfield Connection"
Season 6, Episode 23

Unbeknownst to Homer and Marge, Homer's card buddy Herman is running a counterfeit blue jean ring out of the Simpsons' garage. And while the production is shoddy, the aesthetic is clean. Any evidence of the crime quickly disappears when Chief Wiggum and his fellow officers dip into the goods and start rocking dad jeans like the corrupt bawses they are.