its a dildo basically but it applies the shamwow concept. you basically just shove it in your/her vag and it sucks up all the moisture. now that the inside of the vag feels like sandpaper you can stick your dick up there and make it bleed. colors come in orange, blueberry, blood, and camel. (warning for masochistic purposes only)
Matt-"right after i basted my girlfriend i shoved a shamdildo up her vag then stuck my dick in there. it felt like my dick was rolling around in hot beach sand."
Dan-"aww dude you gotta invite me next time it sounds like a blast!"