shart drinker is a term used when you get angry at someone and then call them a shart drinker, shart is shit. so you'rebasically calling them someone who drinks shit.
person 1: i hate you so much just go away you're so annoying.
A hardo is a person who tries extremely hard at everything. Most times a hardo will try very hard at things that do not require excessive effort. For example, sports practices, gym class, etc.
Wow did you see Jack at practice today? What a hardo!