When you take a big crap and you terd lands in such a way that the dirty toilet water splashes back up at your ass getting you all wet. Usually refered to when your launching Ass Rockets.
Skaz:Im gona go launch some Ass Rockets
Chubbs:Alright, have fun, and watch out for the splashback!
When you take a heavy shit, and the water splashes back up, soaking your butthole. Usually in reference to an overused port-o-jon.
AKA stank water wash, mud cleanse, poor man's bidet.
There's nothing worse that dropping a duce in a port-o-jon that hasn't been pumped out in weeks, and getting a splash back.
The urine in which splashes back and leaves wet spots on pants/shorts, underwear, and shirt. Normally happens to guys who forget to aim down, or when you really have to go.
Person1:"I see you got a little splash-back on your pants there. Tough luck dude."
Person2:"I know, but I had to go really bad and was in hurry."
A door wall is a sliding-glass door or patio door. The term is yet another example of banal Michigan vernacular, where in the residents latch on to company names, trademark names, marketing terms and product names from local companies. The terms become embedded in the local vocabulary and eventually become accepted as actual valid words and phrases. In this case the term comes from Wallside Windows in Taylor, MI (a large window manufacturer), where 'door wall' is their created word for sliding-glass door.
"Bob! John's gonna bring over them doorwalls from Wallsides on Tuesdee afternoon 'round two-thirty. Get 'er done!"