I opened a new two liter bottle of Dr. Pepper in my parent's kitchen when I was in high school. It hadn't been shaken up, it was straight out of the fridge. As soon as I cracked the seal the top flew off and a geyser of soda erupted all the way to the ceiling.

Left a huge stain on the ceiling and soaked half the kitchen in sticky Dr. Pepper. That was almost 35 years ago and I don't think my parents believe to this day that my brother and I weren't horsing around. I guess it was just over pressurized from the bottling plant.