Is it normal to invite myself to parties?

Heh! When I was at university, we used to wander the student areas at weekends listening for loud music. When we found a party, we'd knock on, say we're here for the party and that Dave invited us. There's always a Dave at a party and always one drunk enough to agree he'd invited us (if it was even questioned). If it didn't work, we'd wait ten minutes then someone else would knock and say Mike invited us.

It's not normal. It's both rude and pathetic.

Become a clown or a magician and people might be more receptive.

No, it's not normal. It's rude.

Why would you even want to go to a party where you know you're not wanted? Pretty weird.
I've been to parties that I wasn't personally invited to, with a friend or group of people, or if somebody forwards me a text with an address (even if they aren't the host of the party). I have never been told I couldn't get into a party, but if I were, I would immediately lose all interest in going.
To be frank, you're just making yourself look clingy and desperate. Not to mention pretty weird.
Start partying with people that like you!

The title made laugh.. I'm sorry :C

I've never actually gate crashed a party, but a an ex friend of mine or so called had the damn nerve to say to me that I could not go to a night club with her and her new clique, err did the club have her name above the door. I think not. I just went along anyway and was a deliberate source annoyance all night. People telling me what I can and cannot do; yeah that'll happen. (not) x

It depends on the situation. I'm in college and here it's pretty much free reign, just get on the grapevine and find out what party houses are doing shit that night. I've been to some places where they limit how many people can come but in general places are open to anyone as long as you behave yourself while you're there.

I've always just figured I was invited to parties. I couldn't imagine not inviting someone to a party. Perhaps parties are different where you are.

No, of course not. I only go if I'm wanted.

Awww, that's so sad you were rejected. I'd let you come to my party, if I had one. ;)

While I think it's great you are proactive and go after the good times, I do think there is a bit of party-etiquette that's eluding you here. You may want to check with the host of the parties prior to the big gig and ask them if you can stop in. If they say no, respect their wishes.