Or 'clean up your room'... Best solution would be to pay the first two months rent for an apartment for the kid - get the power turned on and wish him well. Better for the mom - better for the kid... Last time I looked there were no large numbers of starving young people on the street. I'm assuming most of 'em figured it out... he will too.
and change the locks on your doors after they leave. Also change the mailing addresss. People who use your mailing address have a claim on the location.