It is not that Kell does know how to lie. He knows that all too well. It's that he tends to lie to the wrong people. He hates being threatened. Obvious in the way his whole posture changes, the way his eyes narrow and his back straightens.

"Do I really?" he asks, rhetorical question as it is. "I've only told you. And maybe even that I shouldn't have."

Lucifer can glower at him all he wants. The damage is done. That his attempt at fixing it was unsuccessful, Kell is not going to share now.

"It was a stupid spell anyway. Only an idiot designs something this fragile and then hands the execution to people with close to no experience."