BLOG: www.fatherhoodis.com FACEBOOK www.facebook.com TWITTER: www.twitter.com TUMBLR: fatherhoodis.tumblr.com Charlotte, the “motorboat baby” and overnight YouTube sensation, has a twin brother–Greyson. On a rainy Sunday in February, he gave up his first giggle…followed by several more. His mother quickly grabbed the iPhone and captured a few seconds of those tiny little laughs.