well... it wasn't my pinpointer... but I have a kind of funny thing that I used my detector for

My girlfriend and I suspected that her younger sister had her nipple pierced... but she hadn't told anybody about it. I told her to hold still when we were out in their yard, and ran to the car to get my machine. She was obviously confused when I walked up pointing my coil at her and then BEEEEEEEP! My girlfriend yelled, "I KNEW IT!" The look on her sisters face was priceless... a mix of confusion and embarrassment... but in the end we all had a good laugh.