Jon looked at the teenage couple sat kissing and cuddling. Jon firstly swapped their clothes, so that the man was wearing the short skirt and shoes. Then Jon looked around. He swapped the girl for the old man feeding the birds so that he was now kissing the boy.
Gross!
So he got rid of the old man and swapped it with one of the jocks. That was better! He also gave the jock the body of the girl back (but not the head) and swapped the clothes back.
So now, there was an old man stood with the jocks, and the girl with the jocks body and clothes feeding the birds.
He then swapped one of the jocks with the dog, so that he was now playing fetch with the girl. And the rest of the jocks he swapped their faces with the revising girls. He then dediced that everyone would notice the changes and waited for the chaos to commence!