Shit lightning 

When lighting scares you so bad that you shit yourself.

Omg that lighting scared me so bad i got "shit lightning" from it.

Shit lightning by KillerKristen October 7, 2010

lightning shit 

shit that comes out of your ass so fast you can just barely pull your pants down before the toilet floods with shit. sometimes so quick your organs may come out as well

john took a lightning shit and his lower intestines came out

lightning shit by Slappdat August 17, 2016