Here's a Deaf joke. Well just to clarify, you don't need to be deaf to enjoy it. Basically, the punchline is used as a deaf slang to indicate utter stupidity. Like, *point at stupid person and insert sign and roll eyes* It's usually told by hand, so I'll try my best to put it all in written words.
So there's two deaf blokes working on a farm slumming away in the dirt and hay in the middle of nowhere, nearby a nicely designed modern manison. Then one said to the other, "why is that rich bloke with his big fancy house so rich, and we have to do all the dirty work?" "I don't know, why don't you go over and ask him?" "Okay then, I will mate!"
So one goes over to the big manison, and finds the rich deaf bloke on the front porch sipping on a freshly made Mojito. "Hey! Mind explaining why you're so rich and fancy, and us poor blokes have to do the dirty work for you?" The rich man replied "Sure, let me explain. It's because you have no common sense." "Huh, do explain more!" "Not a problem, come over here." Both are now standing next to a wall. The rich man puts his hand out and said "Now, I want you to punch my hand." So the poor bloke did. As soon as he swung his fist, the rich man pulled away his hand, and the poor man ended up punching the wall instead and hurt himself. "OW, fuck, that hurt!" The rich man smiled and said "There you go, common sense, and you don't have it. Now get back to work."
The poor bloke goes back to the other bloke and said, "I get it now, he said we're poor because we have no common sense." "Huh, whatever that means?" So the bloke is looking around, standing in the middle of nowhere, surrounded by mud and hay, trying to work out how to replicate the rich man's practical example. Suddenly he had an idea, and moved his hand to his face, palm facing outwards. "Punch my hand!"