not give a monkey’s (British & Australian, informal)

if you do not give a monkey’s about something, you do not care about it at all. She couldn’t give a monkey’s if everyone’s talking about her. I don’t give a monkey’s how much he earns, I just don’t like him.

Tinkers’ cuss is probably the oldest followed by monkey’s toss, which I think started as a sailor’s expression.

: : The coarse version – “I don’t give a monkey’s toss” (i.e. the ejaculate of a monkey has no value) was sanitised to the other versions in particular “uncle” and as it was widely understood just “a monkey’s” which is the essence of the phrase. I think MT had currency for a long while, but more recently the shortened version has been more popular vernacular.

A scut monkey is a slang term for a medical student who has to do health care tasks normally carried out by nurses or other health workers. A squirrel is slang for an attractive female. You must have been having a very odd dream !