Propwash 

Blue synthetic fluid used to clean or lubricate aircraft propellers. Stored in a hydraulically locked area. You need a special hydraulic lock key to open it.

Windex, Dr. Clean, etc... based off of propwash

Propwash by Justin Quintero, Tariq Zaman January 23, 2009

poopwash

When a toilet has backwash

Man I took such a huge shit that when I flushed my toilet had some major poopwash

poopwash by Buzzzfest March 19, 2016

plopwash 

The water that splashes back when you drop chocolate or take a shit,providing a little rinse for your butt-hole.

Damn,that water cold! That plopwash done froze my booty hole.

plopwash by Lowlifebastard February 6, 2009