I don't know if you are familiar with Spanx, but it's a company that makes shape-wear or "sucking-in-wear" for the ladies. Well, they have recently come out with a men's line of undershirts to assist with sucking in that beer belly and smoothing down your chest - Man Spanx.
These shirts are mostly cotton and 19% Spandex, and come in the three normal styles of under shirts: crew neck, v-neck and sleeveless. They cost between $55 and $58 dollars, but are long lasting.
What do you think? Would you buy one? Hey, if the ladies have things to help their shape, why can't men?