Not to be confused with Water Slides
A lawn water slide is a recreational object featured in The Sims 3: Generations and The Sims 4: Backyard Stuff. Lawn water slides are long plastic sheet mats, usually with some decoration, that have water constantly sprayed onto the mat. Sims can slide down the mat to the end with style or, if they're bad at it, slip and fall.
The Sims 3Edit
There are a total of two lawn water slides in The Sims 3.
Base GameEditMascardo's Marine Misadventures is a lawn water slide added in the base game via the Generations patch.
GenerationsEditUltimate Backyard Slide Rib-it Rib-it Froggy McFrog Slide
The Sims 4Edit
There is currently two lawn water slides
The Sims 4: Backyard StuffEditJusta Lawn Water Slide
+Fitness SKill+Motor Skill AAAHH! Jaws of Death - Lawn Water Slide
+Fitness Skill+Motor Skill
Lawn water slides are commonly known by the trademarked name 'Slip 'N Slide'.