white-cut

When you allow someone to cut in line at the back of you, then complain that they should be in front of you.

Jim: Can I white-cut you Tye?
Tye: Sure

Jim runs and stands at the back of Tye.

Tye: Why aren't you in front of me?
Jim: Oh. ok (runs and stands in front of Tye)

They both get jump by the crowd behind them.