I love a good practical joke. Years ago I pulled one on my dad that was hilarious, Dad never trusted big dogs. He wasn't scared of them, just very wary. My nephew had a huge Rottweiler that was gentle as a lamb but dad just couldn't accept that a dog that big would be anything but vicious. His trademark saying was " Jake, one of these days that dog will bite you in the a**". We were roofing my brothers house and during one of our breaks we broke out a bag of venison jerky. Of course Ruger wanted a snack, too, so we were giving him small pieces of jerky. When dad had his back to me I slid a piece of jerky in his back pocket and made sure Ruger knew it was there. You should have seen the old man dance when he thought he was being attacked by Cujo the mad dog the whole time proclaiming " I told you that dog was gonna bite somebody in the a**". After he got his heart rate and breathing back to normal he even laughed about it, promising pay backs.