A person who makes plans with a person/group but flops last minute; pulls a no-show or a word that you would use to refer to your friend. “Let’s plan something.” are their favourite words. Their excitement level is maximum when it comes to planning and they’re the first ones to back out because #ditcher. It’s a struggle making plans with them, and its a bigger struggle to not get pissed at them when they do this:

5. And so, when they do cancel a plan, you are not disappointed anymore

6. You and your other friends bet on the probability of them ditching you last minute

Friend: 100 bucks says he’s going to make it to the party.
Me: 200 bucks says he will ditch us last minute. You wait and watch.