Little House on the Prairie star Michael Landon once threw a co-star across the set: What the hell?

Dean Butler is looking back at his time in Walnut Grove, Minnesota.The actor, 69, who starred as Almanzo Wilder on “Little House on the Prairie,” recalled a moment on set with Michael Landon, who played the show’s patriarch Charles Ingalls.Landon, who died at age 54 of pancreatic cancer in 1991, was the father of Melissa Gilbert’s Laura Ingalls.The Hollywood vet also served as a producer on the beloved series and directed a handful of episodes.

Butler recounted being thrown across the room by Landon while on the Nov.12 episode of “The Patrick LabyorSheaux” show, hosted by fellow “Little House” star Patrick Labyorteaux.

Butler was also joined by Alison Arngrim, who played Nellie Oleson, Pamela Roylance, who starred as Sarah Carter, Jennifer Donati, who played Baby Rose Wilder, and the children of director and actor Victor French, who played Mr.Edward: Tracy and Victor French.Labyorteaux, 60, asked his guests to recount a favorite memory with Landon.

“I wanted to test and see how strong Michael was,” Butler joked to his former co-stars.“We’re doing a scene together where I was supposed to go limp when I lunged at a guy and I didn’t.

The first time [Landon] said, ‘Go limp.’ I didn’t.The second time he said, ‘Go limp.’ I didn’t.”By the third go-around, Landon wasn’t having it.“The third time — this was the test of his strength — he picked me up and threw me across the interior of the barn as he yelled at me, ‘Go limp,’” Butler recalled.

“It was a signature moment.I just remember saying, ‘What the hell?’ as I was flying through the air and landing on the ground and rolling across the barn, and there were a lot of yucks from the crew.”The “Forever” alum stressed that it was “totally” his “fault” since he was “too pumped” for the scene.

“I got a flight lesson in one of the barns at Big Sky Ranch as Michael launched me across the barn,” Butler quipped.Arngrim, 63, responded, asking...