This is one of my favorites, I still laugh every time I remember it. A couple of weeks ago I was at work & B asked me, "Have you ever..." & then paused, so of course I had to fill in the blanks mentally & respond. Here's how it went.
B: "Have you ever..."
me: "Yes!"
B: "Really? How did you do it?"
me: "Very carefully."
B: "Huh. So did you go around, or through?"
me: "Through, of course."
By this time we're both laughing, then B decides it's time to stop joking around.
B: "Okay, seriously, have you ever used a meat grinder?"