This wasn't too embarrassing but certainly could have been. My sister was in town for the weekend, staying at our parents' home, and we decided to go to a movie. I tend to always wear to movies, when traveling, and when doing out-of-town, touristy things, and she knows.
At the theater I suddenly develop a terrible thirst, buy a small or medium lemonade (avoiding caffeine), and drink it in one shot. I wet my Dry 24/7 very little during the film, but flooded when we eventually got up to leave. No worries. I may have wet again on the walk to my car. Again, no worries. On the drive home, I recall that the tank is practically empty, so stop at a gas station to fill up. At this point I start peeing like there's no tomorrow and getting a little nervous. I get back in the car and sit down to a heavy "squish" sensation that I've never felt before or since. It was pronounced enough that it might have been audible, but my sister says nothing and I quickly check my butt and find no leaks.
We arrive back our parents' home and I make a beeline for the bathroom to look for damage. Urine had shot up the back of my diaper and up my back, leaving dark streaks on my very white t-shirt! Now I had a changing kit with me but never figured on a change of clothes, and even if I had, wasn't keen on explaining the wardrobe change to my parents. I also wasn't going to draw attention by using the clothes washer/dryer, nor spending all that time. What to do?
I decided to hand wash it in the bathroom sink, without getting the entire t-shirt wet, and successfully removed all the pee stains. Then I carefully cycled it over a halogen floor lamp in one of the bedrooms. The drying process took about 15 minute, and when I was done the shirt was still damp to touch but not visibly damp. Crisis averted.