Something smells fishy

There’s this blonde guy walking home after visiting the fish market. He encounters a cat who asks “What’s in the bag?”

“If you must know, Mr talking cat, it’s fish.”

“Oh, I love fish”, says the cat, “Can I have some?”

Blonde guy replies, “I’m sorry, Mr talking cat, I only bought enough for myself. If I had known that I’d run into a talking cat I’d have bought more.”

“Damn. I’m so hungry for fish. Fish is my favorite. Tell you what. How about this: If I can guess the number of fish in your bag, you’ll give me one.”

“Oh Mr talking cat, if you can do that I’ll give you both of them.”

Does anyone know a dumb blonde joke where the blonde isn’t female?

“Oh! I know, I know!”, cries the blonde in the front row. “The one you just told.”

I rest my case.