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1.
The act of ejaculating on top of another persons shit which is still floating in the toilet.
I forgot to flush this morning and some one rainvilled on my shit!
by mr. showtime100 April 17, 2012
 
2.
THE ABILITY TO BE LATE FOR WORK TWICE IN THE SAME DAY
ANTHONY MANAGED TO ARRIVE LATE FOR WORK TODAY, TWICE, HE SURE RAINVILLED THAT!
by J-nETTE July 03, 2010