A fork of Rural Dictionary
To inhale through a straw in an empty cup containing the remnants of a flavorful drink and it's marinated ice cubes. The irritating sound signals to your inattentive waiter/waitress that you are in dire need of getting your thirst quenched.
"where the fuck is my waiter? I guess it's time to bust out the refill whistle."
*Refill whistles are most effective when a waiter/waitress is in auditory range*
*if you hear a refill whistle, your tip may be in jeopardy*