the basic act of placing a sheet of toilet paper in the toilet before you take a shit, with the sole purpose of preventing water from bouncing up your ass.
also a means to mute the turd-to-water impact
(Boyfriend innocently walking past the bathroom)
Boyfriend: Babe, I totally just heard your turd hit the water. And I'm pretty sure water just shot up your ass.
Girlfriend: Yeah, sorry. Forgot to use my landing gear.