rip is a word most commonly attributed to Bloop, but, of course is just a general phrase on the Internet. Most people don't know what it actually means, but it has two definitions:

  1. a statement used when something is ending, whether that is good or bad; ex: "bib is leaving? rip"
  2. what to say when your feelers are hurt

"rip" has inspired the movement rip soph.