I used to tease developer friends of mine when they'd call down to me for unix help.
Me: "Okay okay I can probably help you with that. Just tell me, what is your Stup (pronounced stoop) id?"
Them: "Umm, I don't know how do I figure that out?"
Me: "Oh man, you don't know your Stup id? Go ahead and type this command in shell to get it, "I-M", "<space>", "S-T-U-P-I-D".
Them: "<clacking> You're a dick"