Following Thursday’s series finale of “The Big Bang Theory”, the cast dropped by Global‘s “The Late Show with Stephen Colbert” to share their feelings on the beloved sitcom coming to an end after 12 seasons.

Colbert posed a very personal question to the actors at one point during the interview, asking: “Did anyone ever have sex in their dressing room,” adding: “Show of hands.”

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Colbert’s query elicited a high-pitched squeal from Kaley Cuoco, who cast her gaze to co-star (and former boyfriend) Johnny Galecki.

“You must have,” she told him as he slowly sunk lower in the couch until sheepishly raising his hand.

“And that did not include me,” clarified Cuoco.

“The Late Show” airs weeknights at 11:30 p.m. ET/PT on Global.

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