6 Things Fans Learned About 'Fuller House' Star Dave Coulier From His Reddit AMA

The "Fuller House" star took fans questions on Reddit's AMA.

Coulier, who was promoting his new animated musical book, "The Adventures of Jimmy Bugar," dished on his backstage antics, his early career and Mr. Woodchuck.

Here are a few things that we can share from Monday's revealing Q&A:

Favorite backstage story from the original 'Full House' run

"I threw my underpants up on top of my dressing room and then it became the 'Friends' stage. Then, when we went back to do 'Fuller House,' I went in search of my underpants and climbed up on top of the dressing room to see if they were still there. And they were GONE! Someone stole my underpants," Coulier said. "And people are going to wonder 'Well why did you throw your underpants?' and the reason I did that was because I was making Bob Saget laugh. There are limited options to making Bob laugh and one of them is taking your underpants off and throwing them on top of your dressing room."

He watched 'The Unauthorized Full House Story'

Garry Shandling took him under his wing when he first started stand-up

How he came up with his 'Cut it out' catchphrase from Nickelodeon's 'Out of Control' and later 'Full House'

"I stole it from my good friend Mark Cendrowski. We've known each other since we were 9 years old. And he now directs 'The Big Bang Theory' TV series," Coulier admitted, adding that he stole the hand gestures from his friend too. "He says that I still owe him royalties from that!"

What he kept from the set of 'Full House'