GREASE 2 - Stephanie's Gum

When Stephanie and Michael are sitting at the table studying in the cafe. Shes there chewing gum talking to him. She gets the hamburger and as shes talking about wanting the ketchup shes chewing gum. You even see her chewing gum as she puts the cheeseburger in her mouth. After shes eats and swallows she is there chewing the gum again. I'm sure she would of swallowed it down with the big bite of the burger she took. You don't see her throw another piece of gum in after she takes a big bite of the burger.