Your popularity at the expense of the other.

He also found that aggression was a useful tactic. Violence was still seen as antisocial and undesirable, but “reputational aggression”—the teasing, rumour-mongering, gossiping, ostracism, and other non-physical means through which high-school kids ruin one another’s teenage years—actually doubled the chances of a student becoming a friend of the elite, particularly if the aggressor attacked a high-status individual or someone who was close to them socially (your friends, of course, are your biggest adversaries). Victims of aggression, meanwhile, were half as likely as regular kids to join the elite or second tier. Being an asshole enhances your social status at the expense of your victim.