From the context I'd guess that he said that "coming just from your ass is something that ...

It'sNotJustABoulder June 19, 2021 12:27 am

From the context I'd guess that he said that "coming just from your ass is something that only happens in porn"

Responses
    It'sNotJustABoulder June 19, 2021 12:29 am

    Also, translator-san if you need help with editing or proofreading feel free to slide in my DMs and thank you for translating
    (ノ◕ヮ◕)ノ*.✧