A Casper
To toss something in the trash, vanish like a fart in a windstorm, or be erased from existence like a bad math test. It can be a verb, adjective, or a way to describe someone who just wants to be left alone.
Man, I Caspered my lunch. Now I'm just eating cold pizza for the rest of the week.
She Caspered out of the party like she was running from the cops.
I Caspered my ex. He doesn’t even know I exist anymore.