Matthew McConaughey says Snoop Dogg swapped fake weed for real weed while filming their new movie

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Matthew McConaughey on "Jimmy Kimmel Live!"

• Actor Matthew McConaughey told Jimmy Kimmel about his experience of "being Snooped" by Snoop Dogg, when the rapper swapped prop weed for real marijuana in a scene they both appeared in for Harmony Korine's upcoming movie, "The Beach Bum."
• "We pass back and forth and all of a sudden at the end, he goes, 'Yo, Moondog - that's my character - that ain't prop weed. That's Snoop weed,'" McConaughey told Kimmel.

Actor Matthew McConaughey appeared on "Jimmy Kimmel Live!" on Wednesday and recounted his experience of "being Snooped," or unknowingly getting high, with rapper Snoop Dogg in an upcoming movie they both appear in.

McConaughey told Kimmel that his "snooping" occurred in a filmed scene of Harmony Korine's movie "The Beach Bum," when Snoop Dogg swapped McConaughey's prop weed for real marijuana.

"My snooping happened when it was a scene where I'm going to Snoop, I've got writers block, and Snoop has the magic weed, all right?" McConaughey said. 

"But I go to Snoop and I go to the prop man and make sure I've got prop weed," he continued. "Now, prop weed is not real weed. It's like crushed oregano and stuff. So we get in the scene, it's about a six-minute scene. We pass back and forth, and all of a sudden at the end, he goes, 'Yo, Moondog - that's my character - that ain't prop weed. That's Snoop weed.' And I went, 'Oh, you son of a gun.'"

The Oscar-winning actor added: "The next 9 hours were a lot of fun but I don't think we used one word in the English language."

Harmony Korine's "The Beach Bum" stars McConaughey and Snoop Dogg alongside Isla Fisher, Zac Efron, and singer Jimmy Buffett. "The Beach Bum" doesn't have a release date yet. It follows Korine's 2013 film "Spring Breakers."

Watch McConaughey's interview below: