A caller suggested that maybe Matthew McConaughey's signature catchphrase "Alright, alright, alright", first debuting in Richard Linklater's 1993 Dazed and Confused, originated from Humble Pie's "30 Days in the Hole."

So I decided to look into it, and I did indeed found the origin of the Oscar-winning  actor's catchphrase. As it turns out, he got it from Jim Morrison

McConaughey was listening to a live Doors album right before his on-screen debut in Dazed. McConaughey explains:

"So we go up to the set. I get in the car 'cause I'm nervous. First scene ever on film. And right before we're about to shoot I've got friends in the car and I had been listening to this live Doors album and in between two of the songs Morrison goes, 'Alright! Alright! Alright! Alright!"

McConaughey explained the origin in a 2011 interview with George Stroumboulopoulos:

So there you have it. Read more from the Huffington Post.

"That's what I love about these high school girls. I get older, they stay the same age." - David Wooderson, Dazed and Confused