Alright, alright, his pants are tight.

Matthew McConaughey, 54, participated in the “tight pants” sketch during his Thursday night appearance on “The Tonight Show Starring Jimmy Fallon.”

The nearly 4-minute sketch began with Fallon, 49, skipping onto the stage in a blue striped sweater, white pants and a bowl-haircut wig.

“Everybody’s talking about my tight pants, I got my tight pants, I got my tight pants on,” he sang, dancing around onstage alone.

McConaughey came out from behind him, also sporting a silly unflattering wig, dancing with tight white pants and sunglasses, singing about being the only one wearing tight pants.

The Oscar-winning actor said that his pants were “All tight, all tight, all tight,” riffing on his famous catch phrase that started in “Dazed and Confused.”

Jimmy Fallon began dancing alone, in a goofy wig and tight pants.
The Tonight Show Starring Jimmy Fallon

Matthew McConaughey soon joined in as Jimmy Fallon danced.
The Tonight Show Starring Jimmy Fallon

Matthew McConaughey in the “tight pants” sketch.
The Tonight Show Starring Jimmy Fallon
The “tight pants” sketch is a staple of “The Tonight Show,” with the first incarnation of it debuting in 2012, featuring Will Ferrell.

The sketch always features Fallon’s character getting envious of somebody else’s tight pants.

Jennifer Lopez and Christina Aguilera have also been previous celeb guests in the skit, in 2014 and 2016, respectively.

As the sketch went on, McConaughey proclaimed that he was the only one who gets to wear tight pants.

“Why? Because my pants are the tightest. My pants are the smoothest and they’re great for sipping cocktails,” he said.

He used that line to transition into hawking his Pantalones tequila brand.

Matthew McConaughey used the sketch to advertise his tequila brand.
The Tonight Show Starring Jimmy Fallon

Matthew McConaughey transitioned into hawking his tequila brand.
The Tonight Show Starring Jimmy Fallon

“Tight Pants” with Matthew McConaughey on “The Tonight Show Starring Jimmy Fallon.”
The Tonight Show Starring Jimmy Fallon
Together with his wife, Camila Alves, 41, he announced the brand last October. McConaughey has three kids with Alves: son Levi, 15, daughter Vida, 14, and son Livingston, 11.

After the skit, McConaughey sat down with Fallon, where he shared an anecdote about losing his phone on a Six Flags roller coaster.

“It landed off in the middle of a swamp,” he said. “It was gone. These guys at Six Flags say, ‘We can’t check down there right now because the park’s still open. When it closes tonight we’ll go out with flashlights and look for your phone.’ The next afternoon at 6 p.m. my phone shows up in the mail… It worked!”

Matthew McConaughey and Jimmy Fallon argued over who had tighter pants.
The Tonight Show Starring Jimmy Fallon

Matthew McConaughey and Jimmy Fallon in the “tight pants” sketch.
The Tonight Show Starring Jimmy Fallon

Jimmy Fallon has also done the sketch with Will Ferrell and Jennifer Lopez.
The Tonight Show Starring Jimmy Fallon
In addition to his alcohol entrepreneurship, McConaughey is executive producing Season 4 of HBO’s “True Detective.” His former co-star Woody Harrelson could be more than just his friend and former colleague, he has previously said.

On Kelly Ripa’s “Let’s Talk Off Camera” podcast in April, McConaughey told of a possible romance his mom, Mary Kathlene McCabe, had with Harrelson’s dad, Charles, during the time his parents were divorcing, which made him suspect that he and Harrelson could be brothers.

Matthew McConaughey and Jimmy Fallon danced in tight pants.
The Tonight Show Starring Jimmy Fallon

Matthew McConaughey and Jimmy Fallon both busted a move in tight white pants.
The Tonight Show Starring Jimmy Fallon
Harrelson admitted it could be true during an appearance on “The Late Show with Stephen Colbert.”

“Well, I’ll just say there is some veracity to that thought because we talked to Ma’ Mac, Matthew’s legitimate mother, and she let us know one time … I mean, this is crazy,” Harrelson said.

McConaughey has also been tapped to star in a “Yellowstone” spinoff show, after the hit Kevin Costner drama ends.