"Have you ever had sex with a coworker?"

You hold his file in front of you and pretend to read it. After a long pause to build suspense you ask him if he'd ever had sex with a co worker.

"Excuse me?"

He's clearly stunned but you assure him of the question's relevance and ask again.

"No. No I haven't" He says tentatively. You ask him if he'd like to.

"What? No, I mean... what? I don't..."

He's clearly not getting the picture you could make it more clear for him, or you could back off. He may not even be worth the effort.