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01/26/2015 12:00 pm ET

‘Big Bang Theory' Star Simon Helberg Reveals The Truth About Sheldon's Spot

Actor Simon Helberg, who plays the eccentric Howard Wolowitz on CBS’ hit show “The Big Bang Theory,” stopped by HuffPost Live on Friday and dropped a bombshell about Sheldon Cooper’s infamous “spot.”

In one of the longest-running gags on the show, Sheldon, played by Jim Parsons, is especially touchy about his spot on the brown leather sofa, heckling anyone who dares to sit in his seat. According to Helberg, the studio that films the show is just as protective of the seat cushion.

“The cushion that [Parsons] sits on, which probably will be in the Smithsonian someday, Sheldon’s spot, they actually swap out that cushion during our rehearsal,” Helberg said. “So the whole week, until the few hours that we tape, there is an alternate cushion.

Helberg told host Caitlyn Becker that he wasn’t sure where the cushion goes during the week, but he speculated that armored vehicles may be involved.

“God forbid something gets spilled on that cushion -- that show, the ratings would plummet,” he said. “So they hide this cushion somewhere. And there’s probably like a Brinks truck [with] just a bunch of armed guards there waiting until Tuesday night … just so that we can rub our butts on it."

Watch the full HuffPost Live conversation with "We Will Never Have Paris" director Simon Helberg here.

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