Got her going down, no teeth
I call it speaking tongues
Do it, do it
Now you speaking my language

from DJ Khaled (Ft. Ace Hood, Big Sean, Vado & Wale) – Future Lyrics on Rap Genius

Speaking in tongues is a religious term for when someone is so excited they speak in gibberish
The blow job is so good he’ll be speaking in tongues
also the girl could be using her tongue in this bj

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