I like the dumb Polack jokes, like the one about Polish screen door submarine.
"Hyman G Rickover was born in Poland, he possessed the IQ of a genius and would later immigrate to the U.S. where he would become the "Father of the Nuclear Navy". Had he stayed in Poland this chapter wouldn't have been necessary. Thankfully he left.
Polish expertise in metallurgy led to numerous advancements in hull design and manufacturing techniques. Most significant of these are the development and application of Screen Door (SD™) technology, used by both Polish and Iranian navies."