What does the cryptic crossword clue "Turning stomachs, dirty talk (4)" mean?

The definition is "Turn". The wordplay uses a reversal. TUMS (reversal="‘stomachs’") = SMUT The answer is SMUT.

Turning stomachs, dirty talk (4)

Guardian Cryptic #29587 | 23 Across | 2025-01-09 flower