Two Aussie farm workers Terry and Bazza were out walking the fenceline one day when they chanced upon a female sheep with it's head stuck through the fence.
Not having been to town for a few months, anything female was fair game so Bazza ripped off his trousers and rushed down to take advantage of the poor sheep.
When he had finished he turned to Terry, "Your turn" says Bazza.
"I'm not sure my head will fit through the fence" Terry cried.