A few nights before my wedding (to my first and, sadly, late wife) my best man and I got together at my flat to work on our speeches. We had a bottle of wine and as we were having a different wine for the second bottle I insisted on giving the glasses a quick wash. Why I didn't just get two fresh glasses out, I'll never know.
Unfortunately, while washing the glasses, one of them broke, slashing the big visible artery that runs from the arm into the wrist and which spouts blood like Old Faithful when disturbed.
Cue a trip to A&E, me getting married with a bloody great bandage on my wrist and both of us having to make up our speeches (they were rubbish) on the spot.