A wonderful way to engage science students is to make them think a demonstration is not turning out the way the instructor intended. Basically, throw a little humor into teaching, and they will be hooked. Described in this article is a demonstration that uses Milk of Magnesia (MOM) as a visual and humorous method to review equilibrium chemistry concepts--acid-base reactions, suspension, pH indicators, and reaction equilibriums. This demonstration is very effective, and can be used to teach and review many aspects of chemistry in one demonstration. It is practical, familiar chemistry and is simple to do. It is also safe to perform, and it engages students as they try to figure out and hypothesize what is going on. Finally, it is inexpensive and fun for faculty and students. (Contains 5 figures.)