Many people refer this word to Donald Trump, but the origin goes way back to when Cartoon Network was not on demand. Benson, a charactar from "The Regular Show" yells at Mordecai and Rugby all the time to do something or they're fired.
Trying to explain something to someone and no matter how well or how much you explain they just don't get it or refuse to get it.
"All the evidence shows there was no election fraud but trump supporters still won't believe, you can lead a fuckwit to logic but you can't make them think"