ex-dee Share definition Flag (verb) to type XD, which, if you tilt your head 90 degrees left, is the emoticon of a face grinning so hard that its eyes are squinting. him: XD me: You just ex-deed! him: XD me: Stop ex-deeing. ex-dee by buzhwa June 9, 2005 0 0 Get merch Get the ex-dee mug. Buy Now — $32.95 See more merch