In Et’s exclusive sneak peek from Thursday’s episode of The Big Bang Theory, Sheldon (Jim Parsons) unintentionally crashes Leonard (Johnny Galecki) and Penny’s (Kaley Cuoco) innocent spat about a documentary they watched the night before. (Spoiler: Penny wasn’t a fan!)
When Leonard makes the same joke about the doc, Penny is not amused. “I already pretended to laugh at that joke once, do I have to do it again?” she bemoans, but eventually caters to Leonard’s wishes.
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Seconds later, Sheldon interrupts their lovers’ quarrel and asks Leonard to drive him to work, but gets mysteriously coy when he’s asked why he can’t make it to a Tesla coil exhibition with the crew. “I couldn’t tell you even if I wanted to,” Sheldon says.