An urban legend that has seen some circulation on the internet warns of the dangers of eating Mentos and then drinking Coke. According to rumors, the combination of the fizzy soda with the mint can lead to a buildup of foam that might even result in death.Snopes debunked this myth. While dropping Mentos into a bottle of Coke will cause the soda to create pressure and bubble up into a geyser that surges up to 20 feet into the air, the same effect will not occur if you consume the Coke and Mentos yourself.