Drew Barrymore once thought she got high whilst smoking fake marijuana on a film set.

Drew Barrymore

Drew Barrymore

The 42-year-old actress was shooting for 2010's 'Going The Distance' with Justin Long when she was tasked with smoking from a fake bong, but according to the prop expert Jeff Butcher, the blonde beauty believed she had actually smoked the drug, and both her and director Nanette Burstein thought she was high.

Jeff said: "There was a scene with Drew Barrymore and Justin Long where they smoke out of a bong, and it was kind of a mixed experience. [We used a] herb that looks like weed but doesn't get you high.

"I spent like an hour smoking this bong to try and make it look like a bong that had been smoked in before. And then, you know, we did the scene and Drew thought that she was high and the directors thought that she was high!"

Whilst Jeff insists that the substance in the bong was definitely fake, he admits he too felt a "little bit dizzy", though he believes that's purely down to the hour he spent smoking it.

He added to Refinery29: "I really don't know, I mean I smoked the stuff for an hour and it had no effect on me, you know, other than I guess I felt a little bit dizzy. Smoking anything for an hour will make you feel a little bit dizzy."

And it's not the only nightmare the star has had on set either, as it was recently revealed she "almost died" on the set of Netflix series 'Santa Clarita Diet' after smacking her head on the concrete.

Creator Victor Fresco revealed: "The actor was a wide guy and Drew didn't get a great grip. Then he held onto her legs as she slipped off, and so she just pivoted down all the way and just hit her head. I thought, 'That's it. We've killed Drew Barrymore.'"

Whilst Drew herself added: "It was f***ing terrifying. It was very serious. I've never had a feeling like that in my life."