Once upon a time....in my younger, stupider days... a buddy of mine and I had a case of Sam Adams, and we were sitting in a parking lot, preparing to drink the beers. Sam Adams, unfortunately, is not a twist off cap.
So...were trying to pry these caps off, when i have the great idea that im going to use my car key. Im prying as hard as i can, when the key slips out, and the sharp under-end of the cap is run against my hand very fast, cutting me several times, and very deep. We go into the mall that we were parked outside of, as i am bleeding profusely from the hand. I go up to the service desk, where the lady cleans me up and puts a band-aid on it and tells me to go to the hospital.
...Being the health concious person that i am, i went to a store, in that very mall, bought a bottle opener, and drank me some Sam Adams.
Moral of the story, Sam Adams is not a twist-off cap, so don't use your key to try and open it....