Every event where two people are situated in a plane of thought where they involve themselves with each other. They are all terrible, and the other is always looking forsomething better, so they're both waiting for something better.
A relationship that is such an utter dumpster fire abortion of a trainwreck, that it makes your life completely shitty and miserable, there by transforming from a relationship into a relationshit. The official line of relationship turns into relationshit is when you do nothing but fight with each other and fornicate with each other. When all you do together is FIGHT and FORNICATE = RELATIONSHIT (Congrats! The line has been crossed from relationship to relationshit!)
Dude, I'm either gonna leave Gertrude or I'm going to unalive myself! I CANNOT STAND BEING IN THIS RELATIONSHIT ANYMORE!
a relationship you have for years, from which you get no particular enjoyment, but are unable to terminate in light of the history you both share
"I have to have dinner with Roxanne tonight. <groan>"
"Dude, you're always bitching about her, why do you even still speak?"
"It's a legacy relationshit, I've been friends with her since grade school."