Manly Stanley Share definition Flag When you poke an unsuspecting person in one of their eyes with your erect penis. "John was watching a movie the other night and I gave him a manly stanley. He was pretty pissed off." Manly Stanley by 4gprizzle February 24, 2009 0 0 Get merch Get the Manly Stanley mug. Buy Now — $32.95 See more merch