I admit that I have not really changed much since I was a teenager and I still sit out of social situations etc
But while I for one should totally understand TEENAGERS and their mock lack- of- enthusiasm, I can't take it. 
I used to answer with grunts which also held an undercurrent of 'god you're so stupid mum'. I too would be told to move a dirty cup of mine and then spend the rest of the day in my bedroom out of the way chuntering " I thought they abolished slavery"
All the teenager crap that I did and to some extent still do, has not armed me for being on the receiving end of 'rollin' eyes' or 'tutting'.
I imagined that when this day came I would prescribe to them such things as a baggy black jumper and some Smiths records and say "enjoy it"
But no, the teen in me sees these new teens and moans "god, I didn't ask to be born and now I've got you're moody face to contend with."
Meanwhile the adults gather around the campfire swapping stories of kids not putting their washing in the basket and cups not moved and general uncleanliness and they come to realise and take comfort from the fact that all teenagers are little bastards, it's just that most do grow out of it.