"faux" + "attention": pretending to pay attention in class; an offensive tactic during lecture classes when you are using your laptop. Fauxtention involves giving knowing and "interested" nods to your professor to show you're paying attention. But what you're really doing is preempting any suspicion that you are surfing the internet as much as you really are.

A casual invitation / threat used by an individual that is not afraid of fucking someone up.