The bodybuilder-turned actor Arnold Schwarzenegger was ‘stoned out of his mind’ and was unable to remember what scene he was meant to be filming on the set of Junior in 1994

Arnie was ‘stoned out of his mind’ (Image: Getty Images)

Arnold Schwarzenegger was once “stoned out of his mind” on a movie set – after co-star Danny DeVito laced his cigar with marijuana as a prank.

The bodybuilder-turned actor was so out of it that he was unable to remember what scene he was meant to be filming.

Arnie – who starred alongside DeVito in Twins in 1988 and Junior in 1994 – confessed: “I was shooting Junior and it was the lunch break.

“Danny said ‘Come to my trailer I’ll cook some good Italian food’.

“So I went to the trailer and it was delicious. And afterwards he said: ‘Arnold you are always giving me cigars and I feel guilty.

Prankster Danny DeVito (Image: GC Images)
“I wanna give you a cigar.’ And he gives me this really long one, a Montecristo. It was fantastic.

“We get to the set and continued on with the scene and I’d forgotten my lines. The director said ‘Action!’ and I said: ‘What am I supposed to say?’

“I totally forgot everything. I found out later… that Danny put some marijuana in the cigar. I was stoned out of my mind.”

The Terminator lead tried to get his own back another time – but DeVito rumbled him.

Arnie, 74, said: “He has a nose for marijuana. He said: ‘There is some grass in it’.”

Arnold Schwarzenegger is the former governor of California (Image: AFP via Getty Images)
Schwarzenegger added he and DeVito, 77, remain close – and will soon reunite on screen for Triplets.

Speaking to Jimmy Kimmel on ABC in the US, he said: “We are very good friends. He is a really great guy.”