An adjective meaning something that sucks really bad, or the worst thing ever. Or a noun meaning something that is real jacked up.
Hey man, that old car is definitely 2020. Hey dude, you look 2020. Hey, yesterday was getting real 2020. I hope today is better.
A generic word now generally indicating apathy. But which originally a loud interjection that had a connotation of trying to get the attention of someone whose attention is difficult to get, and from there, took on many other meanings.
It had its origin from some old dude without teeth yelling incoherent, almost random sounds out the front door to get the attention of a kid who spent too much time on a TI99 computer in the early 1980's. So the historical record needs to be corrected. This is the true origin of Meh before Meh was Meh.
MEH! Get in here. MEH! Where are you!!! MEH! Get off that computer and do your homework!!