The dried on bits of leftover cereal stuck to the edge of the bowl. If left unwashed or rinsed, these particles will immediately begin to harden into a spackle that cannot be removed by even the toughest sponge.
Alicia left her bowl of cereal on the bedside table last night, and now she is chipping away at the cereal spackle.
Poo with the consistency and properties of spackle. It smears rather than wiping cleanly, dries instantly, and clings to your ass like it is trying to patch up your butthole.
Mark: Sorry man, I won't make it over tonight, sat down for a quick shit and turns out it is ass-spackle :( Feels like I am trying to squeeze Play-Doh out of a frosting bag.
Peter: Jesus dude, don't apologize. Sending prayers.\