A volcano at the cafe

Took my almost-9-year-old to the coffee shop yesterday, I was stressed, the coffee I needed was wonderful. I bought him a coke. And as we played a relaxing game of chess, he decided to try a science experiment, while I was focusing on where to move my knight. He placed a sachet of sugar into the bottle of coke, and much to his surprise it exploded like a volcano. My reaction was bad, more stress, people came running, coke kept flowing over the table, seat, floor, my son. So I could then continue to stress out or laugh. Well I choose to laugh, it was pretty funny, the look on my son, the suprise. I couldnt stop laughing, it was good to laugh.