The Kowalski

The Minnesota Fish and Game Commission wanted to develop a fish that would offer more for their sportsmen. The Fish and Game Commission crossed a Coho with a Walleye and called it a Kowal. It grew to a nice size and reproduced well however it wouldn't bite. Then they decided to cross the Kowal with a Muskie and called it a Kowalski but it was so stupid they had to teach it how to swim.

Polish Frogs

Q: Why don't Polish people kill frogs?
A: Because it's their national bird.

Hewlett Packard Toasters

If Hewlett-Packard made toasters... They would market the Reverse Polish Toaster, which takes in toast and gives you regular bread.