Instead of suicide bombers, we now have suicide vapers? lol. It's good they're always on the alert, and at the ready, but that's just plain crazy. I hope. I find it funny, kind of. If I were the suicide vaper, it'd never get done! . How could I ever 'knowingly' take my last vape ever? It's difficult enough to put it to rest at the end of the day when my eyes are 3/4 shut. lol
Here's a tip for stealth vaping that I ran across a year or so ago. To minimize the wisp of vapor that escapes from your lips as you finish your draw: Tip the drip tip upwards towards your inner upper lip as you finish your draw. (plus, of course, stopping the firing long before you remove at all)