Matthew McConaughey 'Rapped For 13 Hours Straight'

Today in unlikely celebrity bromances: Snoop Dogg and Matthew McConaughey.

The duo appeared on "Jimmy Kimmel Live!" on Wednesday night to promote their new movie directed by Harmony Korine, "The Beach Bum."

"The Beach Bum" throws the audience into a world of sex, drugs, and depravity led by McConaughey's stoner-writer lead who goes by the name of "Moondog."

Nevertheless, McConaughey probably didn't expect to be indulging in any narcotics himself — before Snoop Dogg turned up, that is.

On Kimmel, Snoop recalled turning up on set and finding a bunch of fake blunts and joints filled with oregano ready for the shoot.

"I'm like, 'Oh no,'" Snoop said, "'Who is that for? That's not for me?'"

"That was supposed to be for me!" McConaughey interjected.

McConaughey then spins the yarn of his first scene with Snoop, where Snoop's character "Lingerie" turns "Moondog" onto the "magic weed."

"I turned to Snoop and I said, 'These are my prop joints: oregano,' because I know I'm gonna be pulling," McConaughey said.

"It's about an eight-minute take," he continued, "It's a long take if you're passing a joint back and forth and you're smoking hardcore [weed]. "So the scene goes on and after the scene, I just feel like man I'm not sure that was prop [weed].

"And Snoop goes: 'Yo Moondog, that wasn't prop weed, that was Snoop weed.'"

McConaughey then says he didn't speak another word of English for the rest of the night to which Snoop replies: "You rapped for 13 hours straight."