Continuity mistake: The airbag on the patrol car deployed when the little car struck it from the side. It deployed a second time a few minutes later when the patrol car crashed into something else.
Continuity mistake: When Julie is hiding in the shower and Steve turns it on, there's a smudge of mascara on her cheek in one shot, then the next it's gone.
Continuity mistake: The patrol-guy tastes the Coca Cola, and the girls go back to the house. But when Stacey comes, there is no Coke in Julie's hand.
Answer: Hooking up is to get together for sex or a relationship.
Grumpy Scot