What does the cryptic crossword clue "Bad bus for teen disturbed a horse, maybe (5,2,6)" mean?

The wordplay uses an anagram. anagram of BAD + BUS + FOR + TEEN = BEASTOFBURDEN The answer is BEASTOFBURDEN.

Bad bus for teen disturbed a horse, maybe (5,2,6)

Daily Mail Cryptic #17308 | 19 Across | 2024-03-06 flower