He's 19. That's legally an adult. If I was in a good mood, I might give him the choice of straightening out or getting out. Or since by doing what has shows that he has no respect for the people who have raised him, I might kick his butt out immediateliy regardless and tell him to stay away until gets his act together.
It's "tough love" for sure but again, he's an ADULT now and that's the only thing that will get thru to him. And hopefully he'll get straightened out before the police put him in jail.
Responses