You can't lie
He asked them.
"So you mean they could still make us visible at their volition?!" I panicked, realizing just now how dangerous this plan was. "What the fuck is the point then?"
"Except it is deactivated, the invisibility can last as long as forever." Luke rubbed the back of his neck nervously.
"I'm sorry." He sighed, "it takes longer than a day to perfect these things. I'm not superman."
"We should have exorin lying around, although, I don't remember using it on you two before." Lolita said, doing a nice walk that showed off her backside while she picked up the red fire extinguisher except I assumed it was filled with the so called exorin.