Craig Ferguson Used to 'Drive the Big Truck' in Rehab With Jane Fonda's Workout Tapes (VIDEO)

Jane Fonda was apparently a big part of Craig Ferguson's recovery process from drug and alcohol addiction, even if she didn't know it. When he had the star on 'The Late Late Show' (Tue., 12:35AM on CBS), he revealed that her video was the only one available to them when he was in rehab.

"We would all go out, me and the junkies, and we'd drive the big truck," Ferguson revealed. Fonda laughed and said she believed him because he knew the "drive the big truck" reference specifically.

"That's how I remember, because before that I was chasing the white line," he said.

Earlier in the night, the pair got into a discussion about kangaroo testicles, which led to Fonda realizing that the one she was holding made her think of Christmas ornaments. "I hope you put it on your tree," she suggested.

She should be careful with suggestions like that, because Ferguson might just well take her up on it. By tomorrow night, his whole set might well be made up with the most disturbing holiday "decorations" he could muster up, though we're sure he would make their presentation hilarious.