Saved by the Bell - Season 3 Episode 9 -

Zack falls for a college girl named Danielle when she goes to The Max to use the phone. In order to impress her, he lies about his age and makes fake I.D.'s so that that he, Slater and Screech can sneak into an over-18 nightclub. However, they get a big surprise when they see Kelly's boyfriend Jeff dancing with another girl there.