When an acquaintance of yours starts to irritate you, particularly when they begin to act like your best friend as soon as you just met them. When you've had enough, you introduce them to another friend of yours who you think has a chance of getting along with them, in hopes that your friend will be more accepting of this person's annoying behaviours than you are. A friend-off is successful when your acquaintance quickly attaches themselves to your friend rather than you. Thus, you have passed off your "friend" to another friend.
Person 1: Is there anything I should be careful of if I decide to friend-off someone?
Person 2: Friend-offs can backfire if the friend you have passed your annoying acquaintance off to is a very close friend of yours and they genuinely get along and become good friends. Every time your inner circle of friends gets together, the person you have friend-offed will then start regularly attending those gatherings, and you will have to endure their presence anyway.