Drew Barrymore shocker – the pain diet.

When perky blonde thesp had her tongue pierced she couldn’t eat or drink normally for two weeks – ideal for dropping pesky pounds.

"They do it and you’re like, ‘Oh my God, why would I ever think twice about not doing this; this didn’t hurt at all,’" she recalled the tongue piercing.

"And then the guy was like, ‘What I didn’t tell you is that for, like, two weeks, it’s just going to be a little uncomfortable."

And then the agony kicked in for the He’s Just Not That Into You star!

"I couldn’t eat, couldn’t drink for two weeks," she confessed.

"Great diet … in a weird way."