Have you ever been in an intense battle and just...well, Leeroyed? Gone bezerk without a care? Heck, you could run into a group of Overtimers with 7% left with no regrets. Everyone has em, no spill em!
(Not including revive Leeroys.)
A personal favorite of mine was a suicide bomb (which I survived) in which I was sourounded by 3 thwackers and an ice knight and just Shield Bashed into a blast cube, lowing everyone up, 'cept one thwacker. Luckily, I was soloing.
Most of the time when I go through a particularly tricky segment of the Clockworks, I find myself with no ER and 1% of health. With no pills or Vita either. (I promise, I'm not always that bad).
At this point I usually just go and grab a drink and calm myself down a bit before entering the final room between me, and the elevator. Once I do, I literally do yell "Leroy Jenkins!" and go charging in to start Nitro spamming. Unluckily, it's usually in a party.