spit nails

bite one's nails

To worry or fret over something.

chew the meat and spit out the bones

To take in a great deal of information and selectively disregard some of it as invalid or inapplicable.

dummy spit

The act of overreacting (as an adult) to a situation childishly, in an angry or frustrated manner.

hard as nails

Very unsympathetic; callous

spit feathers

To feel very thirsty.

spit in the ocean

A very small or insignificant amount; something of little importance.

spit in the wind

Alternative form of piss in the wind.

spit into the wind

Alternative form of piss in the wind.