Joy of Missing Out: You’re enjoying what you’re doing in the here and now and not on social media broadcasting or seeing what everybody else is doing. Opposite of fomo or the fear of missing out.
Guy #1: I had a great day, climbed a hill and didn't checkfacebook.
Guy #2: Good day?
Guy #1: Yea pure JOMO.
When something is so unbeleiveably awesome that it becomes comparable to the awsomeness of the works of Joss Whedon, creator of Buffy the Vampire Slayer
"Wow, that movie was jossome"
"We had a jossome time at the fair"
Short-hand for the word floccinaucinihilipilification, meaning the estimation of something as valueless (encountered mainly as an example of one of the longest words in the English language).