Right as she is about to smoke it, her father arrives and takes it away, by throwing it on the ground, squishing it with his foot, and then shooting it with a gun several times, and he is shown to be putting the gun away into his jacket. (which is also filled with other guns and weapons) Appalled, he goes to tell Marge that Lisa needs to be taken out of the ballet academy, but discovers how proud she is of Lisa; Homer is unable bear to destroy Marge's happiness.
Marge
Lisa