Why did the boy leave his chestnuts in the rain?
He wanted them rusted.
Why did the boy leave his chestnuts in the rain?
He wanted them rusted.
Okay, so listen up. This joke is all about a pun, which is a play on words. See, "rusted" sounds like "roasted." The boy left his chestnuts in the rain so they'd get rusted, get it? It's funny because chestnuts don't actually get rusty, only metal does, you dumb dumb.