G.O.B. delivers George Michael's pot to Michael, but smokes some in the back patio. ("Pier Pressure")
Michael and G.O.B. fake a drug bust with the Hot Cops to teach George Michael a lesson. George plans an even more realistic and elaborate drug bust to teach G.O.B. and Michael a lesson. ("Pier Pressure")
George, pretending to be Oscar, says he "smoked the marijuana like a cigarette" ("Sad Sack")
Every year, Oscar attempts to make a 420 mile walk up to UC Berkeley ("Afternoon Delight")
Michael asks Oscar to help Lucille calm down by giving her some "afternoon delight" (meaning sex) which Oscar assumes is a strain of pot known as Afternoon Deelite. ("Afternoon Delight")