When you go to sleep because you can't see straight, you might be vaping too much. When you find yourself vaping in the shower, you might be vaping too much. When you find that your PV is always glued to your lips while you're awake, you might vape too much. But as long as that smile is on your face you'll never get enough.
Sounds like a topic for a new contest. When you ........, you might be vaping too much!