The act of putting ones anus up to a strainer and then shooting diarrhea through the strainer to give the effect of rain. This maneuver is recommended to do upon the face of a prisoner, a sleeping child, or any other unexpected organism.
I made rectal rain all over my cat.
by j hound September 06, 2010
When a man comes in a womans ass and she bends over and farts.
by Anonymous October 16, 2003