A race horse breeder is transporting his prize stallion to market and gets caught in a terrible storm. Seeing lights in the distance he heads toward possible safety and comes upon a farmhouse. He throws himself on the mercy of the farmer to give shelter to him and his stallion until the storm passes.
OK says the farmer but my prize mare is in the barn and she is in season so you cannot put your stallion in with her. The breeder says, don't worry he is not the brightest tool in the box, we will just throw a large sheet over your mare and he won't even know she is there.
The storm rages throughout the night and they hear tremendous crashing, bashing and whinnying coming from the barn but figure the horses are just scared by the storm.
In the morning the two owners venture out and are horrified to find the mare has escaped through a hole in the barn. They jump in the farmer's car and head off in search of the lost mare. Eventually they come to a neighbour leaning on his gate and ask him "Have you seen a horse run by with a large sheet over it?"
"No" says the neighbour " but about 20 minutes ago I saw a mare run by with a hanky tucked in its arse"