It's bad to cancel plans last minute.
Jim is supposed to pick up Matt on his way to a concert that they're both going to.
Jim needs to grab some food on the way to the show.
Jim decides to get snacks at the venue, and him and Matt go to the concert together.
Jim decides to hit up a convenience store on the way to the show and skips picking up Matt to save time.
Matt appreciates Jim being a good friend and offers to pay for the snacks.
Matt is left wondering when Jim is going to arrive, and ends up missing the show.