cerote
Refers to the crust of grime and dried sweat that accumulates on the skin due to a lack of hygiene. It is the dark dirt visible in body folds, such as the neck or elbows, when someone fails to scrub properly while bathing (In Venezuela, this refers to skin filth rather than the common meaning of excrement used in other countries).
That is gross, dude! Scrub your neck well with the sponge because you have a cerote stuck there.
Automatically translated from Spanish