Necrocaninepyroanalingus
Vigorously licking a dead dog's rectum while it is on fire.
John said, "What the hell are you doing with that dead dog?" Fred said, "Well, I found the dead dog by the side of the road. I was bored, so I decided to light it on fire and perform Necrocaninepyroanalingus on it!!" John: "Oh, OK".