If you're American coming into the bathroom,
And you're American coming out of the bathroom,
What are you in the bathroom?
European.
Listen up, buttercup. This "joke" is a play on words. When you're "a-mean-I-can" get into the bathroom and "a-mean-I-can" get out of it, you're "European." Get it? It's called a homophone, you walnut. And you probably think that's a fancy pastry.