Practically meaning the loss of something with lesser or no value.

When you eat dirt for the first time and leave your family to build a shack in the woods

Rest In pepperoni is a middle of the herd term used to describe a death, usually on a video game.
The scale goes as such:
RIP-Used by people who post everything cat. YouTube videos, Tweets, everything.
Rest In Peace-Used by casuals. Usually they play Mario Cart, or some other simplistic game.
Rest In Pepperoni-Used by 360 no scopers who do the Y Y 360 dorrito shrek shot.
Resterino In Pepperino-Used by creeps. Broneys, neckbeards, and people who write fan fictions in youtube commments are the most common culprits.

Kyle: Wow, everytime i go bowling i throw gutterball after gutterball
Jake: Rest In Pepperoni, i throw strike after strike.

Greg: Sweet! I finally collected every item in Club Penguin. Resterino In Pepperino game! Time to go play ToonTown!