Two windmills stand at a farm. One asks the other, "What is your favorite kind of music?"
The other windmill replies, "I'm a huge metal fan!"
Metal Fan Windmill
Explanation
Explain Bear
Listen up, buttercup. This joke is funny 'cause one windmill says he's a "metal fan." Now, "metal" is a type of music, but windmills are also made of metal! Get it? It's like calling a dumb guy a "blockhead"!