The Babysitter

Allison is an 18-year-old high-school senior. She shows up for a babysitting job at the Jones' and discovers that they want her to watch their 20-something son, Jimmy, whose just broken up with his girlfriend. She says no, so they sweeten the pot, offering $100. After Mr. and Mrs. Jones leave, Jimmy asks Allison if she'd like a beer. Is this a set up?