Another Clever Horse

A farmer goes to the vet about his sick horse. The vet listens to the symptoms and tells the famer: "Look, I know what it is; there's a lot of it about at the moment. You just need to give him a powder."

"How the hell do I do that?" asked the farmer.

"Easy," said the vet. "You just pour the powder onto a sheet of paper, then you roll up the sheet, insert the roll in the horse's mouth and blow."

"OK, I'll give it a go," said the farmer.

But half an hour later he came back, his face all red, his nose streaming and emitting almighty sneezes and coughs. "Doc," he spluttered. You have to help me. Is there an antidote to that stuff you gave me for the horse?"

"Of course," said the vet, "but I don't understand. Didn't you roll up a sheet and blow it into the horse's mouth like I told you?"

"Yes Doc, I followed your instructions to the letter. Everything went perfectly, but then at the very last minute, the horse blew first ...."