This is an amazing experiment for mixing diet coke and mentos. I can't imagine the chemical effect from those. Are these two guys trying to create a world record? :)

Author lists his experiences related to removing Aspartame from his diet and lists side effects. Submitter is seriously examining his own consumption.

The Mentos Geyser Tube is a small clear tube that is designed to maximize the effect of the Mentos eruption, also known as soda geyser experiment. It’s easy to use by loading the mentos into the tube, lock it onto your 2-liter Diet Coke, pull the pin and make sure you run like hell. You will be seeing a 30ft soda fountain in front of you!

The Mentos Geyser Tube ($5) is a small clear tube that will help you maximize the effect of the best backyard science experiment ever discovered. Just load the Mentos into the tube, lock it onto your 2-liter of Coke (diet works best), pull the pin and run like hell.

the awsome mentos effect

Aspartame (or APM) (pronounced /ˈæspɚteɪm/ or /əˈspɑrteɪm/) is the name for an artificial, non-saccharide sweetener, aspartyl-phenylalanine-1-methyl ester; i.e., the methyl ester of the dipeptide of the amino acids aspartic acid and phenylalanine.This sweetener is marketed under a number of trademark names, including Tropicana Slim, Equal, NutraSweet, and Canderel, and is an ingredient of approximately 6,000 consumer foods and beverages sold worldwide. It is commonly used in diet soft drinks, and is often provided as a table condiment. It is also used in some brands of chewable vitamin supplements and common in many sugar-free chewing gums. However, aspartame is not always suitable for baking because it often breaks down when heated and loses much of its sweetness. In the European Union, it is also known under the E number (additive code) E951. Aspartame is also one of the sugar substitutes used by people with diabetes.Aspartame is a subject of a public controversy due to possible health risks, and has consequently lost market share in recent years to sucralose (Splenda).