The 24-year-old star of The Lucky One demonstrated his impressive bra-removal skills on the Australian TV show Hot30 Countdown.
The hosts praised Efron for unhooking costar Taylor Schilling's bra in a single flick. Although the former Disney star initially claimed he didn't remember doing that, he was persuaded to demonstrate his talent with a piece of pink and black lingerie.
"You just pinch and slide," he said, effortlessly unhooking the bra held up against his hand. "Well, how else are you gonna do it?"
"Boys can't do that," host Mel Greig piped in.
"I assure you, they can," Efron replied.
He even coached host Matty Acton through the lingerie-removal process, high-fiving him when, after a slight struggle, he successfully unhooked the bra's clasp using Zac's tried-and-true method.