My recommendation would be to send (take?) him to chat with a counselor at a local Community College. Let him see a path for his future. Perhaps he could be presented with options he hadn't thought of. School comes with responsibilities, camaraderie, competition and opportunities to be around like-minded people.
We did this with both our sons. Both went on to University. (One late 20s now, and other early 30s) One is a doctor and one will be a lawyer next spring.
I don't like the idea of kicking him out of the house. That could go bad a thousand different ways. Be tough, be firm, but guide him with love.
Best of luck.
If ever there was a face I wanted to hit with a spade shovel . . .