When you are walking along and then you are faced with someone else in front of you. You then attempt to side-step out of the way, only to have them step the same way, thus blocking your forward progression once more. You then side-step again to get out of the way only to have them do the same action. This repeats until finally you both stop and work it out. See Face Off Breaker
"I was just walking down the street and I got in a Face Off with this bitch"