When I was a kid my neighbors huge dog "Parka" used to show up out of nowhere (when we would open the door) and barge into our house. He run all over the place creating havoc and wouldn't leave until he got some food. We were the fat kids in the neighborhood and he always saw us walking around with fudge-cycle's and such, so he knew where to go. It was real annoying because he would usually show up right after we got done watching "Kung Fu" reruns on channel 38. I'd be busy kicking my little brother's ass "grasshopper style" and suddenly there would be this canine madness going on in the house. One day I decided to take hamburger bun and pour some castor oil on it. He engulfed it with glee... Then started dry heaving and ran out of the house. He never came back.