FOMOMO
A condition largely encountered by the olds (especially in big cities with heavy traffic), defined as the regret of making big plans that involve large groups of people (parties, group dinners, concerts, etc), instead of curling up at home with a good book/Netflix/etc. Stands for Fear of Missing the Opportunity to Miss Out. A variant of flaking.
When I was drunk, I made plans to go that show at the Bowl on Saturday with Sara, Jake and their work friends, but the next morning, I woke with a bad case of FOMOMO.