Droopy's Good Luck Charm - S1.E38

Slick Wolf sells Droopy a good-luck charm for $5. Spike tells him that it was really a good-luck charm, and the two try various ways of getting it back, with their attempts backfiring each time. Spike offers to buy it back for $10, and Droopy sells it back to him. Slick and Spike see a sidewalk salesman selling about 30 of them, and Slick chases Spike for wasting their money.