Bolloxed can also mean "tired", right?
It certainly could, as a cruder alternative to knackered. "like a kick in the bollocks" is spot on.
pats his secretary 'on the fanny
Would result in an arrest in the U.K. unless she consented to him patting her growler.
Can one use a vulgarism like "bollocks" in an exam
If you choose the story option and it's consistent with the story. It wouldn't be a great idea for the transactional letter or the formal report.