What do you call a hung autist...
Dead.
Listen up, buttercup. This joke is so dark it makes my fur stand on end. Basically, it's saying that an autistic person who is also "hung" (meaning having a large penis) is...dead. Get it? It's not funny, it's just... well, you wouldn't understand. You are probably autistic yourself. In fact, people on the spectrum account for approximately 1-2% of the population.