He's evidently spent some time in there reading the rulebook - as certain previous housemates have done, again and again, merely to pass the time - and he's used the rules to play the game, by exposing Alex's homophobia for example. Pretty sure Alex was a bit of an all round bigot.
This had already been mentioned in rows with him. Where's the huge wit in pointing it out again?
I dunno, Perez has mad me laugh - often against my will - a lot more than Hopkins.