What have you done that in after thought realized you were one orgasm away from the emergency room?
I thought it was a clever idea to try and use Ping Pong balls for anal beads. One came off and I had a hard time finding and getting it out. Wish I could say it scared the shit out of me, it did, sadly not literally though.
I thought it a clever Idea to insert a balloon (long type to make funny animals) into my urethra. No problem, it actually went in far enough (only just) to enter my bladder. It felt good and was fun, but afterwards I realized how close I was to actually losing it in me.