The electrician knows where the ground is.
The extroverted mathematician looks at YOUR shoes when he's speaking to you.
An extroverted physicist looks at shoes when they're talking to you.
An icebreaker
General Knowledge
Ask them to pronounce the word, "unionized".
They throw silverware on the ground!
Me: How do you know what weed smells like! Busted, mister! You're grounded for a week. Dad: Okaayy