The act of using watery feces to humiliate another individual in any way whatsoever. Also an act of morbid affection.
We all watched in horror as Danielle Donatello vandalized Xander Zimmalina's Shitty Times Ten(Chevrolet S-10) by putting her watery feces all over it. She later explained that she had just performed the infamous Mississippi Mudslide. She also added that this is also an act of morbid affection. We were totally shocked and genuinely afraid. We then proceeded to back away slowly while carefully keeping her in our line of vision. Before finally sprinting to safety one of us told Danielle to "look over there". Upon success of this classic diversionary technique, we found safety in a nearby alley. Breathing heavily we all wondered if one day we would ourselves become victims of the Mississippi Mudslide. We hoped not but then again it is an act of affection so we were somewhat confused.