Acting like a stereotypical frat boy, Zac Efron continued to film scenes for "Townies" on Wednesday evening (May 22).

The “High School Musical” hottie rocked his Greek-symbol tee as he frolicked around the Los Angeles set, causing all kinds of mayhem.

In related news, the 25-year-old actor is set to portray a college-aged Donnie Brasco in the upcoming flick “Narc.”

According to Deadline, the film follows Brasco as a “student, frat president, and lacrosse team captain who’s busted for drugs intended for a party, then secretly turns narc and helps the cops bust criminals while carrying on his BMOC campus life.”