A large anus dump in a normal water-filled toilet where the turds stack up high enough so they are actually no longer covered by water...Hence, breaking the water line.
1. Never consume chili, eggs and a protien shake in one day...because the next day you will take a shit so large it will break the water line
by ZpprHead March 30, 2010
1 more definition
A dump which is able to support itself and rise above the typical average water level in a toilet. An outstanding achievement, the performer is encouraged to bring others in to witness. Photographs do not have the same impact.
He was able to break the water line with a single chute of feces. They carried from the field that day.
by Pantaloon January 09, 2008