Sorry CJ4Life - you know I love you {

), but you knew I'd disagree with you about this.
So...here's my take on things.
Dirk was sleeping when Cleo went in and deliberately woke him up to pester him. I'm not saying that the housemates shouldn't have gone in the living area - it's there for all of them to use, but to deliberately wake him up to pester him is damn rude.
He asked her to stop a couple of times, but she wouldn't. So he went out of the room, and still she followed him around the house doing what she knew was winding him up. Why would someone do that? If someone was upset, why keep pushing it further and further? Because it's funny to see someone upset? To provoke an argument? Who knows? But even the other housemates clearly thought that Cleo should leave it and not follow Dirk out of the living room.
I also thought she showed a nasty side when she was in the diary room and said, "Dirk's about to crack - I think we should play on that." Why?? If someone is on the edge, why try and push them over it? Is it funny to see someone crack up?
Her reasons for following him around were that if he dishes it out, he should be able to take it. What a stupid reason. She mentioned that he was talking to Jo and Danielle about porn and she didn't seem to like that. Well first of all, it was obvious that he was JOKING! Secondly, Jo and Danielle have the filthiest mouths out of all the housemates, so it was pretty obvious that they wouldn't be offended.
Same when he was playing around with Shilpa...Shilpa clearly wasn't bothered by it, as she was laughing around with the rest of them (plus, she has been flirtatious with Dirk, and playing on the fact that he fancies her).
If either Jo and Danielle, or Shilpa had asked him to stop - like he asked Cleo - I'm sure he would have done. He said himself that if he was teasing someone and they told him to stop, he would.
I find it hilarious that Jo said that Dirk had no manners. The words pot and kettle come to mind. Since Jo has been in the house, she has proven herself to be bad-mannered, bad-tempered, foul-mouthed, spiteful and bitchy.
She also commented that Dirk had said she couldn't use his lighter any more. I didn't see him say that, so I don't really know what context he said it in...however, it sounded like the gas in the lighter was going down. Regardless, it's quite ironic that Jo is moaning because he said that to her. She has constantly been bitchy and rude about Shilpa (she's only stopped because Jade was evicted and Jo and Danielle are worried that their behaviour towards Shilpa was not liked by the public). As Cleo herself said, "If someone is going to dish it out, they should be prepared to take it." Maybe she should tell Jo that.
Incidentally, humour is subjective. I personally found Cleo's 'Tiara' character about as funny as a hole in the head. It was just plain annoying.