rule 34 anal anal sex animal genitalia animal penis anthro balls bat pony bondage bondage bound butterfly gag catheter chrysalis computer encasement english text equid equine equine genitalia equine penis fan character friendship is magic gag genitals glue hasbro hi res implied diaper imprisonment inflatable bondage krd latex mammal masturbation medial ring medical instrument membrane anatomy membranous wings microphone monitor my little pony pegasus penetration penis permanent permanent bondage prison warden rainbow dash mlp rubber scientific instrument story story in description text wings 8728492