When someone orders food that's shareable but meant for only that one person, moochers who want some part/portion for themselves call "secondary beneficiary" like one would call "shotgun" to claim a seat in a vehicle, when preparing for a ride. Roommates, friends, and family are notorious for such moochery.
Christine ordered a pizza for herself and tried to keep quiet about it. As soon as it arrived at her house, her little brother called secondary beneficiary.
by Wizard Toast October 3, 2010