http://www.mangago.zone/read-manga/a_man_like_you/uu/m_chapter-72/pg-16/
... Maybe he's referring to him being a man-whore so it's always prepared? Or perhaps- yeah, I don't know lol
Or because he's a masochist so in the end it doesn't matter if he prepares him or not?
Maybe
http://www.mangago.zone/read-manga/a_man_like_you/uu/m_chapter-72/pg-16/