My friend is gay

Ok I think I will try this.

That txt message he sent me a few days ago makes me scared, I'm scared to meet up with him now...lol

Next time you go out be like "God, look at the tits on that girl - they're great. I love tits. I love women. I really want to go out with a woman. A woman."

This is really good advice. He might not actually fancy you at all and just be messing around - he might just be trying to provoke a reaction. i've been guilty of doing that myself in the past and i'm sure other people do it.

But the fact that you say you act camp probably makes it more likely that he is trying to come onto you. If i were you i would just tell him exactly what you've said on here but using fluffier words (especially if he's quite sensitive); just say that you would rather he didn't write those kinds of texts etc because you find them a bit awkward because you're straight and don't fancy him. Some people on here have said you should stop acting camp but i don't think you should - you shouldn't have to change the way you behave simply because it gives off the wrong message to one of your friends.

I don't want to rude but some of the advice isn't the greatest, it's just that if you say so directly like 'by the way i'm not interested as i'm not gay' it comes across as to much and a bit snobbish, try and suggest things in a joking way, like if your around him.

How do I explain to him that I'm not gay and I'm not interested?

The danger is that if it sounds too much like a joke it just doesn't get taken seriously. It's hard to say things sincerely without coming off pompous, but this is the type of thing that (I think) really should be said sincerely. It doesn't have to be a major proclamation, just a casual "by the way, in case you got the wrong impression, I'm straight".

It depends on the situation, and how you normally talk to each other. If you think "sorry mate, this thing's for outgoing traffic only", while patting your behind, will go down well, go for it.