My mate was out in his tractor and needed a plop so he goes behind a hedge, pulls his overalls down and lets rip. Wipes with a scrap of paper and pulls overalls back up. He then looks to examine his big poo only to find nothing there!

Yes thats right, he'd actually poo'd into his overalls and then pulled them up and spread his turd up his back. What a muppet. Seriously funny when he told us in the pub.