A Facebookdandy is a younger or young-ish gay male whose facebook profile picture shows him shirtless in the bathroom mirror; the picture usually shows the very camera which was used to take the picture. In addition to the profile picture, most of the other pictures on his Facebook page are shirtless ones of him, taken by himself or taken by others. The profile picture of the Facebook dandy is a good indication of what can be found in the rest of his profile: Truly atrocious taste in music, a fondness for inane TV shows and movies, and many FB friends with similar profile pictures.
"Darryl wants to be friends on facebook; but his profile pic makes him look like a total narcissistic douchebag. That, and the pictures of him at the pool, at the club, and at the beach. Darryl is clearly in good shape, but he's as shallow as a dinner plate. I'm not adding him as a friend, as I don't want to be bombarded with the predictable cascade of self-picture downloads and 'shares' every time there's a new Lady GaGa song. I don't want a Facebook dandy on my friends list."