A Small Joke

I was told a small joke by a Polish fellow.  It helps to know Polish to really get it.

Where does Barack Obama live?  Gdzie mieszka Barack Obama?

—Barak Obamy.

Barak is Polish for an old, large, decrepit, uninhabited house.  Obamy is the genitive (possessive) of Obama.  Thus, the punchline is: "Obama's big, old house."

It's not hilarious, but it's kind of funny to those enjoy playing with language.