The extroverted mathematician looks at YOUR shoes when he's speaking to you.
One has culture.
Jokes about Batman's parents can get old.
Tulips on your organ.
They both look good hanging from a tree
When they came to Ellis Island, not one of them could speak a lick of English, but they all had "To NY" on their hats.
An American
Because if they didn't their local gas station would turn a blind eye.
They're the ones who look at YOUR shoes when they talk to you.
The extrovert looks at the other person's shoes.
An extrovert mathematician will be looking at the other guy's shoes.
Introverted Engineer looks at His shoes when he's talking to you. Extroverted Engineer looks at Your shoes when he's talking to you.
One who looks at your shoes while he's talking to you instead of his own.