Pulled this one on two professors at our nursing education lab. We all decided to go out for lunch together, and one professor is known for being absolutely horrible with directions. Naturally, she's driving. In downtown Detroit, no less. She proceeds to get into an argument with Prof #2 in the passenger seat, who actually does know her way; Prof #1 insists that she knows where she's going (she doesn't).
One of my lesser known talents is an ability to imitate voices. From the back of the minivan, I break out my best navigation system imitation: "In one quarter of a mile, turn left."
Prof #2: "Oh, what are you arguing about? You have OnStar!"
Prof #1: "No I don't!"
Prof #2: "But it just told you to turn left!"
Prof #1: (terribly confused, but turns left)
Me: (OnStar voice) "Proceed about three quarters of a mile."
Prof #1: "(Prof #2), I swear to you I don't have OnStar! I don't know what that is!"
Prof #2: "Well, maybe it's in your phone or something, but I know that's OnStar. I have it in my car, and that's the same voice."
Prof #1: (losing her mind)
Me: (OnStar voice) "Your destination is ahead on the right. This concludes the route guidance."
Prof #2: "See, isn't modern technology great? We're right here at the restaurant."
Me: (in my own voice) "You're welcome."
Prof #2, after realizing they'd both been had, fell out laughing and asked for an encore. Prof #1 threatened to make me walk back until I reminded her that she might need help with directions...