near the knuckle
US /nɪr ðə ˈnʌkəl/
UK /nɪr ðə ˈnʌkəl/

1.
müstehcen, yakışıksız, sınırda
almost offensive or rude, especially because of being sexual or involving rude humor
:
•
His jokes were a bit near the knuckle for the family gathering.
Şakaları aile toplantısı için biraz müstehcendi.
•
The comedian's routine was quite near the knuckle, but the audience loved it.
Komedyenin gösterisi oldukça müstehcendi ama seyirci bayıldı.