Don't know whether we have had joke threads before, but maybe its time to go down that route - or maybe not. In order to make it vaguely topical I suggest just jokes related to sheep. I will kick off.

Did you know that the Welsh first came up with the idea of contraception in the 15th century, by using the lower intestines of a sheep. This invention was refined some 300 years later by the English, by the simple expedient of removing the lower intestine from the sheep first.