Land one on the beach
To "land one on the beach", or "landed one on the beach" is to take a shit that is so big that at least half of its unbroken length sticks up out of the water of the toilet bowl and clings to the porcelain like a beached whale taking its last breath.
Dude, you've got to see this. I just "landed one on the beach", It was such a big shit it brushed my nuts when it finally broke loose and fell over. I love it when I "land one on the beach" I never flush those, so the next guy can see how insignificant his shit capacity is!