Renn

Renn is a derogatory term for people whose brains are rotten and decide to open their phone which is the only thing they're able to do. They tend to be annoying, pushy, rude and rejected by society, most usually seen in a form of a phone addicted 13 year old. If a renn ever sends you a friend request or waves at you run for your life (and your hygiene)

"he's such a renn!"
"don't degrade him THAT much"