In the olden days, before soap became a clean-smelling, pristine bar used to combat your biggest stains and baddest germs, soap was a stinky, smelly, disgusting product made of lye and animal fat. Hearken back to the days when scrubbing with the foulest substance on the earth was good enough by playing a trick with this dirty face soap gag. What appears to be yet another brand in the long line of cleansing products is really a fake soap product that adds dirt, rather than subtracts it. Use it in the bathroom in hopes of catching a victim's hands or be a little more daring and stick it in their shower. A word of caution, though: you'll eventually have to "come clean" with your devious prank.