a shit that is so massive that it lays on the bottom of the toilet bowl and yet still manages to "break the surface" of the water in the toilet. Hence - Surfacebreaker
After numerous cheap tacos, Steve left a surfacebreaker in his friend's toilet.
by Zsands December 22, 2009
1 more definition
Pitching a loaf of such epic proportions that it piles up higher than the surface of the water.
by T-White December 15, 2005