Fear Of Missing Out - a pychological condition which leads to participation in events one wouldn't or couldn't normally participate, in (an effort) to acheive bragging rights, or which prevents an individual acting normal in the presence of such an event in case they are invited in by one of the acting parties. Bragging rights are often misjudged at the time of the decision.
Gary went with Julia and Tom into a bedroom at a party to have a threesome, even though Gary doesn't like men, because he was gripped by FOMO. Gary still hasn't spoken about the experience.
Peter couldn't look away from 2 drunk girls making out even though a pretty girl was talking to him. The FOMO was too strong.
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