Why can't orphans play baseball?
They don't know where home is.
Why can't orphans play baseball?
They don't know where home is.
Listen up, nimrod! This joke is about orphans, who don't have parents. The punchline is that they don't know where "home" is, which is a play on words because "home" is also a base in baseball. It's funny because it's sad! You probably don't understand metaphors too well, but "home" in this case is a place that you live with your family that loves you. Get it now?