Mac was moments away from begging Jack to damn well do something but then seeing him licking his fingers, oh how Mac wished he was the one sucking on Jack's fingers right then, but he knew what was going to happen next and that was even better. He would swear he never acted like this.
But Jack made him want to do things that he didn't think he should have wanted to. Like right then. He couldn't quite stop himself whimpering at the sight, then he thought he might just pass out from happiness as he felt Jack's fingers teasing him. He pushed back against them. The teasing was maddening but he was loving it so much.