Preemptive Call

A phone call you make to your needy girlfriend/boyfriend before you get into a Do-Not-Disturb mode. The primary (albeit unspoken) purpose of the call is to momentarily assuage your girlfriend/boyfriend's urge to call you, thus decreasing the likelihood of them calling you later, when you can't afford to be distracted.

Peter: I gotta do my taxes, but I bet my clingy girlfriend won't be able to fight the usual urge to call me.
Lawrence: Dude, just turn the damn cell phone off, or, better yet, make a preemptive call and get it over with.