Can also be achieved by a horny female stuck in a field for only a lambs hoof to fulfil their weird horny nature!
Scott: "that's because its lamb hoofing season it has its hoof stuck up its vagina"
Dave: " Err thats sick man!!!"
Dr " how did you get that hoof up there"
Female " I was camping and forgot to pack my shit pole, I was horny and lamb hoofing was the next best thing! "