1.) A sexual act and concept where 5 midgets, or little people, are standing over the slip-n-slide mat, front to back, while you jump and slide down it - esentially getting teabagged by 5 little men. This concept was created in Osaka, Japan, and is starting to become repected throughout the south-asian community.
2.) A line of naked female midgets stand on top of a slip-n-slide, and grown men take turns peeing on them until all of the females have slipped off their feet, somewhat like pins in a bowling lane.
"By the time the fourth ball sack hit me in the nose, I was risen with excitement. I never expected a midgislide to be so enthralling"