I think it's act jackie jr's funneral the cops show up and arrest silvio and patsy for bookmaking, junior soprano and bobby are coming into the graveyard and see the cops, so junior hightails it out of there by running to the car and driving away while bobby is yelling at him to wait. Those actions combined with tony's reaction to watching all of it is hilarious.

Also at Joe peeps funneral when silvio's guys put "peeps" on the headstone and tony and silvio have this exchange
tonye: "peeps? his name's pepperelli"
silvio: "we'll get it fixdd, benny, he's dyslexic"
tony: "the fuck does that have to do with it?"