SHPLASH
The action of making a extremely big wave with something that is not water.
you: wow mate you made a big shplash
Me: thanks mate
Me: thanks mate
Shplash
When you drop a subway footlong sized shit in the toilet and the water splashes back and hits your ass covering you in poo-water.
BRO…. That Taco Bell burrito was so explosive, it made me shplash and it made a massive mess on the floor.