Utah-based online clothing brand Beloved makes something called the "Belovesie," which is a long-sleeve, unusually-patterned onesie for grownups. It zippers all the way up from deep crotch to the top of your head, completely covering your face. That feature, I think, is best described as "disconcerting."
Enter the Sexy Christmas Belovesie which has truly nothing sexy about it. See for yourself: