An extroverted Techie looks at *your* shoes when he's talking to you.
He was looking for a porpoise. (thought this one up but I doubt I was the first one that did.)
When talking to you, the extrovert mathematician looks at *your* shoes.
Stop talking in secret code.
Incommunicado
A school teacher tells you to spit out your gum, a train says choo choo.
Because it's two gross! (A gross is a measurement unit for "144". So 2 * 144 = 288. Or "two gross".)
He's staring at your shoes instead of his own.
Green clog. (looks almost like a turtle shell)
