By Nick Romano
August 27, 2016 at 02:48 PM EDT

Kevin Smith and his daughter Harley Quinn Smith have a close relationship, but their awkward and inadvertently sexual text exchange made Stephen Colbert red in the face. The host of The Late Show listened to the filmmaker recall a time when Harley referred to him by a name reserved for the bedroom.

According to Kevin, Harley had been bugging him to go to The Wizarding World of Harry Potter. When the filmmaker tried to persuade her out of going, she texted, “We can just buy front-of-the-line passes, Dumbledick.”

As it turns out, “Dumbledick” is more than just a play on Dumbledore — it’s a name Kevin’s wife used during a sex game. “We were fooling around,” Kevin told Colbert. “It was a sex thing. It was kinda like ‘the wand chases the wizard’ sort of thing.”

While he admitted there’s no way Harley would have known the context, the exchange got even more awkward. After telling Harley “only your mom calls me that,” Kevin received this in reply: “Oh, Mr. Thin-Skinned Dumbledick, bothered by his nickname.”

Hear the full story in the video above, beginning at the 6:30 mark.