Zac Efron is one hot piece of fraternity brother.
The 26-year-old actor is showing off his body in the raunchy new comedy Neighbors in which he plays a hard-partying frat boy.
Efron acknowledges he's shirtless "a lot" in the flick.
"I don't know how many times. It just seemed like whenever we felt like it—no hesitation," he told me at the Neighbors premiere at the South By Southwest (SXSW) Fesitval in Austin. "It was like wake up, work out and then go to set and party all day."
Neighbors stars Seth Rogen and Rose Byrne as a young couple with a baby who find themselves living next to a rowdy fraternity house. Efron is the fraternity president lording over a group of trouble-making frat brothers played by Dave Franco, Christopher Mintz-Plasse and Jerrod Carmichael.
Efron would get his bod pumped by also working out in between scenes. He once found a spot on set where he thought no one could see him doing a "ton of pushups." Little did he know, an old man was watching. "He goes, 'Steve McQueen used to do that,'" Efron said. "He just looked like he had a lot of wisdom and I was like, 'Really, Steve McQueen did that?' He's like, ''Yeah, I saw him do that,' and then he goes, 'Don't do too many because you'll get sweaty.'"
Rogen also had his share of shirtless scenes with Efron. "It was brutal," he said of standing next to his costar. "I was just telling my wife there are a few scenes where he had his shirt off and people make a noise I've never heard before when they see him. It's crazy. It's a weird noise."
Just how raunchy is Neighbors? Very! Make sure to come back to E! Online and check out E! News tomorrow at 7 and 11:30 p.m. for all the hillarious NSFW details.