This month's lead paper in the American Journal of Physics[8] regards a subject that is dear to most grad students hearts, beer. A team of scientists Limerick, Ireland report on research they did to determine why the bubbles near the wall of a pint glass of Guinness flow down instead of up. The preprint[1] of the article can be found on arXiv. The article inoduces fluid mechanics of the physics of the 'bubbly flow'. In addition to the bubbly flow, the article introduces the 'anti-pint' (picture 1). One wonders if the phrase was coined while the research team [4] performed the experimental portion of their work, measuring the settling time of a Guinness Stout. If you have a fear of fluid mechanics like I did until today, then this article is an excellent gentle introduction to the subject. In terms of their relation to your Guinness, the article introduces the Reynolds number [2], the ratio of inertial to visc...