Dinosaur Fetish
The dinosaur fetish is a fetish when one is sexually attracted to dinosaurs. Normally people will get one of those inflatable T-rex costumes and use a strap on dildo and ram it up someone's asshole. Sometimes people will put stones around the rim of an asshole holding it together with Elmer's glue.
Richard has an extreme dinosaur fetish, he had John ram a strap on up his ass while in a dino costume.