When no one actually likes a person but only stays friends or befriends them because they think everyone else likes them, when in reality no one likes them.
Adjective
“No one actually likes Austin , he’s a narcissistic, selfish, self centred, so far up his own ass dickhead who thinks he’s so important, the only reason people are friends with him is because they think everyone else likes him, it’s the Austin Bock theory!” It means he needs to be humbled because no one likes him