This is a very nice topic! Ok, here are some tips from me:

1- Don't use any slangs unless you REALY know how and where it is used! Speak plainly and clearly!

2- If you have a question, a nice and poite way of askig is by starting your sentense wuth "I was wondering ..."

Eaxmple: Instead of asking "Why did you connect diode A to transistor B in that figure?" say "I was wondering why diode A is coonected to ...".

3- Pronunce words correctly! Don't pronounce school "eskool" etc.!

I am of two minds !!!

M: "What PC ?" What are you reading that for ? Thinking of buying a new PC ?
S:You've got it. My current machine is four years old and it's a bit slow for the latest video games
M: That's a museum piece ! You've got to get a new one right away.
S: I'd like to, but my brother told me that in about six months they'll be selling PCs with even more powerful chips than the latest ones today.
M: It's always like that.
S: So I'm of two minds, whether to buy now or wait for six months.
M: Oh, go for it. If you wait for the next most powerful chip, you could be waiting forever.

Explanation :

Of two minds - Unable to decide about something.

Internet scam !!!

L: I'll be a lot more careful when I buy stuff in the internet auction.
C: How much have you lost ?
L: Three hundred dollars for a ring the seller never had in the first place.
C: This happens all the time. What did you do when the ring failed to arrive ?
L:Well I contacted him of course. But the answer I got was that it must have got lost in the mail and I should make a claim on the postal service.
C: That kind of internet scam is all too common these days.

Explanation :

Internet scam - An illegal plan for making money in the internet

sorrily!!!!!!
In spite of many visitors of this post ,there is no person to motivate me to continue!
please tell me my slangs is good and profit or no!
please give me your suggestion!
my endeavors are only for you! for all of us!
thanks!
hopefully

19; Be careful! Unfortunately I think we don't have such a word in English.
Here you are! This is your motivation!

Maybe an average reader expects to learn something more necessay/useful from this topic. So I would recommend you to write not only slangs, but also some conversation styles and common grammatical mistakes.
This was my opinion as an ordinary user not as an admin!, so you may disregard it

You don’t need our approval to continue
Believe yourself for whatever you do if you think it is useful
Somehow it would be useful for somebody

You must not eat that food.

thanks for your care!

Bonehead


Definition:
An unintelligent person; someone who does stupid things.

Example:
1) Jason put his hand right in the fire. What a bonehead!

2) That bonehead doesn't know his right from his left.

Etymology:
The outside part of your head (skull) is made of bone, which protects your brain. If your whole head were made of bone, and you didn't have a brain, you wouldn't be very intelligent. A 'bonehead' is someone with all bone, no brain.

It's really applicable!!!!

This is a story about four people: Everybody, Somebody, Anybody and Nobody.
There was an important job to be done and Everybody was asked to do it.
Everybody was sure that Somebody would do it.
Anybody could have done it, but Nobody did.
Somebody got angry (about that) because it was Everybody's job.
Everybody knew that Anybody could do it, but Nobody realised that Somebody wouldn't do it.
And (/It ended up that) Everybody blamed Somebody because (/when) Nobody did what Anybody could have done.

or the alternative last line:
And (/It ended up that) Everybody blamed Somebody because Nobody actually asked Anybody.

Charles Osgood (the American CBS News anchorman and writer?).

Abji Pantea! Would you please tell us from where you quote these slangs and phrases?

yes!!!!!!
train english group of orkut! and englishdaily626.com and ....