A comma is half a breath, because there is no time to take a breath, you must keep telling them, but you must take half a breath to keep you going. A full stop, then, is a satisfied grunt. A folding of arms. A defiant nod. I have finished.
A semicolon; frustration swallowed to the back of the throat. You wanted to nod and fold your arms but more is needed.
A colon: a self conscious intake of breath before your uninvited lecture can commence.
A question mark? A shrug, palms lifted. Eyebrows raised.
An exclamation mark – jazz hands!