Regarding the comments about Nutrasweet foam in Cecil’s column (http://www.straightdope.com/classics/a2_043.html), I have a question.
Why does the foam dissipate much, much more quickly when I rub my sweaty, oily nose a little, then place my nose-greased finger into the foam? Is there some sort of chemical reaction going on between the carbon dioxide and the nose grease? I drink a lot of Diet Dr Pepper and have used this trick hundreds of times to quicken my fill-ups.
Don’t believe this works? Try it.