(I pass the customer 3D glasses for his movie.)

Customer: “So these are 3D glasses?”

Me: “Yes sir!”

Customer: *getting excited* “So, if I put them on and look at you, you’ll be in 3D?”

Me: “Sir, by definition, I’m already 3D.”

Customer: “No. I mean, if I put on 3D glasses and look at you, or anything else, will you become 3D?”

Customer’s girlfriend: “You’re dumb. Just stop talking.”