Slit Peeper Share definition Flag Someone that spies on a girl's pink spot while she pisses/shits. "Close the blinds while you take a shit, honey. I hear the new neighbor is a real slit peeper." Slit Peeper by slitpeeper#1 May 17, 2009 0 0 Get merch Get the Slit Peeper mug. Buy Now — $32.95 See more merch