It's clear for all to see what Perez is trying to do in there, apart from being an attention seeking demented twat of course, I think he has read up online and found that a lot of people enjoy the controversial and argumentative housemates so he's trying to play up to that but theres a major kink in his plan due to him being able to dish it out but can in no way handle getting it back.
He is trying to push people to the limit, make them insult him, threaten him and so on so he can run up to BB and say he feels scared, threatened by them hoping they will be either removed or evicted.
Just some examples..He found out what happened between Jeremy and Chloe and starts going mental shouting 'You need to get out of this house now, I don't feel safe' etc, Jeremy gets removed (although we all know the real reason for that) He argues with Ken and starts the same old 'I don't feel safe in here' ****, Ken gets removed (again we know why) but Perez at this point is clearly thinking he has the public onside and starts with all his comments like 'the public love me' 'I will be here until the end' and so on, he argues with Cami and Chloe and Chloe ends up evicted but this is when he hears the crowd chants and starts panicking hence the 'I want to go home' bull****.
Also there's no way he was soooo offended by Alexander's comment to him (although Alexander was definitely in the wrong for saying that) Perez has called other people that before
http://www.huffingtonpost.com/2009/0..._n_219088.html