Use it before a sentence to exclaim surprise and redirection of a train of thought. Do this no more than once a week and it can add useful emphasis to your communication efforts.
Or, use it before every other sentence as the new like. This way it does nothing at all, but will drive old people nuts and make you sound like a reality show super star.
Wait................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................................ ya it's not very fun, eh?
Child: " Momma, am tired as hell, let's go home."
Momma: " okay, now you wait just one sec sunny boi"