You will turn many a good looking dude off with an ashtray mouth and teeth, not to mention the stale odor on your clothes and in your car and hair! Yuck! It is not sexy or even acceptable by most nowadays that we know what it does to us! Lung stuff can come back at ya latr in life too and lots of us know all about that! Get off em now while you can.
Hi hon,
No, this is not common, but your lungs are already telling you something at this very young age. Hel-looo? :))
Please take this as the sign it is, and stop smoking today.