McShift
1) A 16 hour shift at McDonald's or some other second rate, crap job. aka. a double shift
2) One who behaves like a total dickhead.
3) A girl who stands you up for a date.
1) I am tired as hell.  I just worked a total McShift.
2) Ben!  Stop being a McShift.
3) Nancy Jean didn't show up for our date.  I've been completely McShifted.