Lonely Sucks

Someone who sucks and bad at everything he does

guy 1: Guys, I need help in game
guy 2: Sure, I can help you
literally everyone else: No! 'Guy 2' Lonely sucks, don't help him, let him solve it alone.

Plebchamp

This refers to someone that did something amazing yet stupid/Amazingly Stupid.
This term derives from the words 'Pleb' and 'Pogchamp'.

Person 1: Yo! I just pressed the fire alarm!!
Person 2: What the hell?! You're such a Plebchamp bro.