When one conjures up an excuse of sorts to get out of an unenjoyable event. You can "miss the bus" on dentists appointments, weddings, birthdays, school dances, or say swim practices.
Leesa: I missed the bus on Emma's party, but its okay it looked lame.
Izi: Are you going to the football game?
Rebecca: No, I think I'm gonna miss the bus.
Tori: It sucks that you weren't at setbuilding, we had so much fun.
Charlotte: Darn it, maybe I shouldn't have missed the bus.