FEAR OF NOT BEING INVITED - Similar to FOMO, but it is the fear of not being invited to an event or a gathering. Many people won't mind as much missing out, as long as they were invited in the first place.
When I couldn't make it to the best birthday party of the year due to a prior engagement, I didn't get FONBI and didn't mind missing out on all the fun because at least I was invited to the party .
You searched every letter on your keyboard in the most random way possible, maybe hoping that nothing would show up, maybe even hoping that you could write your own UD definition of it...
Beat you to it, fuckaroo.
You: Can you believe someone actually wrote a definition for fonbtwxcleszqrvjmpauhdykgi?
Normal person: Return to the psych ward, you're not ready.
ALSO:
You: Welp, I might as well procrastinate in the most unproductive way possible by searching fonbtwxcleszqrvjmpauhdykgi.