Wait? What? Yup! There is a day called “National Underwear Day.” It was created by a company called Freshpair on August 5th, 2003 in an effort to publicly shine light on “unmentionables.” Here are picture books to celebrate national underwear day. The Underpants Zoo by Brian Sendelbach. This unusual zoo features animals wearing all types of underpants. Tip: We pretended to…