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Johnny Galecki left a lot of DNA on The Big Bang Theory set:
Johnny Galecki stuck his chewing gum on a wall in *The Big Bang Theory* set’s fake stairwell for 12 years, according to Kunal Nayyar. He joked the gum-covered wall might be for sale online. Galecki may have used gum to mask his cigarette habit, but a source claimed it didn’t help much.
Celebs Who Had Disgusting On-Set Habits
Johnny Galecki left a lot of DNA on The Big Bang Theory set:
Johnny Galecki stuck his chewing gum on a wall in *The Big Bang Theory* set’s fake stairwell for 12 years, according to Kunal Nayyar. He joked the gum-covered wall might be for sale online. Galecki may have used gum to mask his cigarette habit, but a source claimed it didn’t help much.