Q: Take an eight-letter term that's often used to mean 'a good child.' Remove the first two and last two letters, and reverse what remains to get a four-letter word meaning 'a bad child.'This may be the worst clue I've given recently: Brumby
Edit: The two clues were "worst" (as in BRATwurst) and "Brumby" (the Australian version of the Subaru BRAT). Working backwards you should have gotten the original 8 letter term.
Q: ALTAR BOY --> BRAT