It's wrong to get off on disturbing your family members.
Dave is at home with his parents and is feeling particular bored at that moment.
Dave wants to do something to amuse himself.
Dave puts on some music and begins to do a funny dance to burn off some excess energy.
Dave bursts into his parents room and opens his mom's closet and throws all her stuff out to get a reaction out of her.
Dave's mom sees him dancing and is greatly amused by his silly self expression.
Dave's mom thinks he's gone insane and gets very angry at him yelling at him to put it all back.