The foreskin of a nub (or noob, a person who is new and/or plays a game childlike.) Calling someone a nubskin suggests that they play so poorly, there are indeed the foreskin of the nub.
nosking is the term one uses when they are "not asking" another person on a date. in essence, it is the closest one comes to asking another person out without actualy doing it, simply because they cannot be allowed to actualy date the person they are nosking out.
"i really want to ask you out, but i cant because i am afraid of gertting hurt and your leavbing at the end of the summer. so im "Nosking" you out, because i still want to be with you in some way..."
the way to look at it is ,knob,kins suggesting kin as brother so you are a close relation to a knob whereby suggesting you are a knob which as you already know is an insult so its another way of calling someone a dick.Also see wanker.