There may no such thing as "dirty" Soap but there sure is such thing as "Bloody" Soap". Catch your victim "red handed" with a simple and unsuspecting bar of Soap. The Soap stores a red dye activator underneath. As the victim picks up the Soap to lather the dye sets in. You'll probably hear screams from the bathroom and he or she'll hear laughs from outside. Who knew getting clean could ever be this dirty.