A man walked into Sam and Ellas's Cafe and sat down at a table exactly two and one quarter feet from the window.
The first waitress with straight hair came over to take his order but he sent her away and asked for the waitress with curly hair to take his order.
He ordered a cucumber and cheddar cheese sandwich, a cup of cuban coffee and a chocolate chelsea bun.
After taking the order the curly haired waitress immediately said,
"You must be in the army".
She was right, but how did she know?