Friendservation
When you make a cell phone call to someone you know standing closer to the front of the line than you are currently. You then walk ahead in line to the person you just called, thus confirming your friendservation.
You see some douche butt in front of you in line while talking to someone on the phone. You then realize this douche is on the phone with someone toward the front of the line confirming his friendservation. It's bullshit really.