Commonly found with people who fail to transition a informal verbal agreement to a formal written agreement, backstabbers, double-cross someone, or dealing with someone with a "do nothin', get everythin'" mentality.
2.) Mike had been involved with some win-lose bargaining when he and Ken agreed to split the bill only for Ken to leave without notice, leaving Mike to pay for the large meal.
3.) When someone agrees to give another head after they themselves have been given head, but then leaves, the giver of head is on the losing side of the win-lose bargaining.