Jin is many things, but there is one thing he is the undisputed Master of.
This guy could talk himself out of more sex than anyone I know or have ever known. Every time a girl wants some type of sexual encounter he has some type of comment that gives the girl an instant reason to just say, "Yah know what, let's just forget it".
Example:
Hazel "Now i'm even hornier and we've bonded over shrimp cookies, so I think it's time we go to the bedroom and you fuck the shit outa me."
Jin "How do you know i'd be up for that?"
If I was Hazel i'd just look at him and his dumb face and say, "Yea, your probably not, just forget it. You can go."