The extrovert looks at the other person's shoes.
Wendy's is never frozen.
Oprahs Black
Gee, it's hard to say, although he did seem pretty shaken up about it.
On Tinder.
The extroverted mathematician looks at YOUR shoes when he's speaking to you.
An extrovert mathematician will be looking at the other guy's shoes.
Let's throw a party while we're at it.
They look at YOUR shoes when they talk to you.
He puts himself in the other person's shoes and then walks away.