Spewing Dr. Pepper fountain

I went to eat at lunch and they had one of those serve yourself soda fountains. There was a wet spot in front of it and one of those yellow foldout "wet floor" warning signs. I didn't think too much about it, till I tried to get a drink and the drink got me ;-). I have never had that happen. It was like if you shook up a can of soda and then opened the top. It got all over me.