OH I pitty you with teenagers...I have been working with teens all summer in day camp/travel programs...how thankful I am that my kids didn't do that stuff...but I still have a S almost 12 to contend with...as for the droopy pants one mom told me she would wedgy her son and told him if didn't want his butt crack at the back of his head to keep his pants up....she also threatened to throw out all of his boxers so it would be his "bare ass" hanging out...most schools don't allow it around here (not like they get to enforce it though) and it has been proven to cause physical problems in boys due to the way they have to change their walk...messes with the hips and back...
As for the sex life stuff...for me what helped (a bit tooooo much) was taking a natural supplement called DHEA...I did get a prescription for it so that I could have a compounding pharmacist make mine up assuring potency but it can be purchased over the counter...I believe I took 25mg a day...I too was one that was only in the mood during my furtile days (cruel trick)...so it was quite nice to feel frisky other times...of course now after taking it for couple of years (there were other good benefits to health too, read up it is good stuff) I had to stop for financial reasons (it isn't expensive but we got down to nothing so anything was too much)now...I can't seem to turn "off" the button and it drives my LD H crazy...he also is dealing with ED and so far drugs haven't been the answer for him...
I hope this gives you some info to work with NJ and GGB