In inches. Snakes don't have any feet.
He's the one staring at YOUR feet when he talks
They're both leg ends.
A Black Adder
They have no legs to pull !
Gigahurts. (Came up with this in the car on my way to school hopefully its original)
In Hertz.
You don't know when they're coming, you don't know how many inches you'll get, and you don't know long they'll last
Back up a couple of inches.