The solution to man boobs - male compression vest. http://www.lessbounce.com/acatalog/Male_Compression_Vests.html
I can't speak for it's performance but it certainly looks like the answer to a more streamlined figure for men.

Are you serious? I'm astonished anyone bothers to make and sell these things these days - I thought they went out in the 1920s. They're restrictive (possibly damagingly so), bulky, heavy, hot, ineffective, unflattering ..... and expensive. Do people really wear this kind of thing? If so why?