The term 'BRIT'S 'NONSENSE!' can be solved by the crossword solutions TOSH (4 letters) and ROT (3 letters). The term 'TOSH' is a British slang word meaning 'NONSENSE' or 'RUBBISH'. It is derived from the Romani word 'TOSH-vaz', which means 'WORTHLESS'. The term 'ROT' is an acronym for 'RUBBISH, old, and tired', which is another way of saying 'NONSENSE'. Therefore, the crossword solutions for the term 'BRIT'S 'NONSENSE!' are TOSH and ROT, which both mean 'NONSENSE' in British slang.