When youre fucking and change positions so that your dick gets pulled out of the hole youre using. To successfully get a [Pacifier], you usually have to have, a big dick head, a [tight hole], or be at an angle when you pull out. One, or any combination of the three, make a loud popping sound when you pop out. On The Simpsons, when [Maggies] [pacifier] gets taken out, listen for the POP!