off-colour
adjective UK (US off-color) uk/ˌɒfˈkʌl.ər/ us/ˌɑːfˈkʌl.ɚ/
(ILL)
[ after verb ] informal稍有不适的，略感不舒服的
slightly ill
I'm feeling a bit off-colour today. 今天我觉得有点不舒服。
(SEXUAL)
（言论或笑话）有伤风化的，下流的
Off-colour remarks or jokes about sex are about sex and are slightly shocking.