For decades the variation of that joke here in the States was,
There were two farmers raising pigs, and they decided that their goal was to win first place at the County Fair for the largest pig. So they fed and fed the chosen animal, and he got just so big, and no more. They observed to each other that the pig was eating all that they gave it, but it just came out the other end. So it was decided to stop that nonsense by sticking a cork in the rear end. Sure enough, it worked- the pig got bigger and bigger until it was almost the size of an elephant. They took it to the fair, won first place! They got it back to the farm, and had a conversation about what to do about the pig. "You know we have to remove the cork- you want to do it?" "Heck no, why don't YOU do it?" So they decided to train a monkey to remove corks, put the pig out in a field, hired a helicopter to lower the monkey on a rope down to the pig while they stood far off with binoculars. The big moment came as the monkey went down the rope, reached out to the cork...and everything went black! After they picked themselves up, one said to the other, "What did you see?" "The last thing I saw was the monkey trying to put the cork back in!"
Hey, a good joke is a good joke anywhere!