Um, yeah what everyone else said! I have a 21 year old, in university ,still living at home--currently he's in Thailand for 2 months...yippee!

I remember him at 15, and every one here has accurately described the profile.
What can I add?
Make rules
Discuss the rules before you start them
Be gentle in stating them, but insist they be followed
Be open from time to time, to renegotiation of the rules.
Apply with lots of hugs
Try not to get exasperated, but you will!

Rich McCarthy