Sounds dirty, but it is just hideous article of clothing where shirt and shorts are one. My opinion of course, as someone likes them, it reached its Kickstarter campaign goal on the first day! I think maybe fashion sadists just want to see other people walk around in these things. And practicality wise, unless you're 9 months old and someone is helping you dress, onesies are cumbersome especially at bathroom time, it's just a matter of time before a part of it gets dipped in the toilet. Which may be the best place for it. But hey, it's America where man-onsies are free to exist!