Disandwiched
When a coworker asks you commit to going out to get lunch together, then said coworker betrays you by acquiring lunch elsewhere and not notifying you of their change in plans.
1. Steve asks Jason at 10:00am to go get Indian food with him for lunch. Jason walks into the kitchen at 11:45am and finds that Steve is eating a large sandwich, implying that he cancelled lunch plans with Jason in the rudest way possible.
2. "Aww man, I just got disandwiched by Eric. That guy is such a dick."
2. "Aww man, I just got disandwiched by Eric. That guy is such a dick."