Made a Gumballhead clone for my wife's bday, per her request. I put half the batch in a Party Pig in the refrigerator (second time using the Pig).
Once the beer was carbed up and ready I pushed the dispensing button, and as soon as the inflating piece (which pushes the beer out) inside the Pig started to fill, a screw on the dispensing cover popped out and I had highly-pressurized homebrew spraying ALL over my refrigerator.
So I frantically grabbed the pig (and made a huge mess) and pulled it out of the fridge and pointed the spray into the sink, as my wife started grabbing pint glasses and lining them up on the countertop. She'd put the glass next to the spray, and I'd direct the spray to fill each glass. By the time the Party Pig was empty, we'd filled about 15 glasses. It was a Sunday night, so we figured we may as well try to knock as many of them out as we could so they wouldn't be wasted. Well, they were all flat because the Pig never did have a good seal and they didn't carb up.
Half a batch of beer down the drain; haven't used the Pig since. Refrigerator still has places with beer in it which we haven't made an effort to clean...and this was back in July '13.