Proko sits up as much as he can, propping himself up with his arm so he can take a hit off the bong when it's ready. He doesn't need this to fuck but he's not going to turn it down, either. It's good, it's whatever. He just doesn't want Jiang to change his mind, to act like fucking is so different from sucking cock.

But Jiang gave good head, he has to have done it before, right?

After he takes a hit he tries to get closer so he can shotgun Jiang.