Some people use shit to refer to solid waste matter from the body of a human being or animal.
shitted
to defecate
shitter
to defecate
shittest
to defecate
shitting
to defecate
the shits
diarrhoea
hot shit
If you say that someone thinks they are hot shit , you mean they think are very good at their job or career , or impressive in some other way, but you think they are not