Define Lighting Them Up, Shitting Them Out Meaning

Lighting Them Up, Shitting Them Out
The act of placing a lighter or other flammable device near ones anus. In the hope for an immense fireball when one farts, and instead soils there pants.

Bob: I heard this was "Lighting them Up, Shitting them out" was fun, you should try it!
Matt: What does that mean?
Bob: You will find out soon enough. It's really funny!
Matt: OK then. Let's give it a go.
Bob: Good Luck! (Bob steps back, Matt commences the act)
Bob: How was it?
Matt: I'm going to go take a shower, be back in a few hours... (Matt waddles slowly down the hallway)
By Korney