a slippery  doo da is when  you fuck a girl  hard in the ass  then you eat all  her hair on her scalpe until she is bald then you let her shit on your eye lids as you blink her  shit gets into your eyes. then she makes out with you  while you both  have her shit in your moufs. It  is also known to be  done with dogs,cats,mouse  any small woodland animal would work nice. and if you really want to  get down you can  use a  elephant.   some  people like to kick it up a notch and    get knives and cut open there partners insides and  have sex with there internal intestines
by mike March 11, 2004
 Get the slippery doo damug.
Get the slippery doo damug.