How do I solve 1 across in Times Cryptic 29542?

Question

Accepted Answer

1 across reads "Blair cracked boring, licentious jokes" (8 letters); the answer is RIBALDRY. It's an anagram clue: the answer is a rearrangement of letters supplied by the clue itself. Look for an indicator like 'mixed', 'broken', 'cooked', or 'wild', and find a phrase whose letters add up to the answer's length. The full step-by-step breakdown is on this page.

Blair cracked boring, licentious jokes (8)

1A — Blair cracked boring, licentious jokes (8) — RIBALDRY