The end result of taking half a dump, wiping prematurely, then dropping the rest of your deuce, and wiping again.

A jack off buddy (from 'cum' /'come', meaning 'semen', and 'companion'); a friend that you get together with for sessions of solo or mutual masturbation
Variant of: cumpanion (from 'companion' & 'cum'); jack off buddy & wank bud & JO buddy
Similar to: fuck buddy

Layer cake, A term describing the violent and dark layers of the organised crime world.

Cake that is in layers. Its layerable.

The end result of a collection of persons defecating in the same toilet without flushing, or indeed putting the loo roll in said toilet, in which the effort of a group creates a fantastic art piece the family or indeed friends can enjoy.

Noun. An expansion of the muffin top. A layer cake refers to both the roll of flesh bulging over tight fitting pants as well as the roll, or layer, of fatty flesh created by a tight fitting bra. The combination of fleshy rolls create a layered effect, ergo, the layer cake. While a muffin top can be sported by a woman of any size, a layer cake is a label generally attributed to larger women.

you're baking layer cakes when taking a dump in the sink then wiping your ass while not being sure if you got it all out already. So you give it another try and out comes the poopy poo which makes you wipe your bottom again which then in the sink forms a layer cake of black-and-white poo-paper-poo-paper etc.