S1·E54 Witch Witch is Witch

Winnie is asked to baby sit for two boys. After putting the kids to bed, she falls asleep. The kids then take her magic wand and perform various tricks. After they change themselves into gorillas they can't remember the magic words to change them back. Winnie's broom wakes Winnie and then Winnie changes everything back to normal as the boys' parents are coming home.