english idioms!

Lets play the game of english idioms!Without english idioms we never could learned the english.Rules of the game is simple like that.You must tell an english idiom and must view its meaning.
A penny for your thoughts.
It is used is a way of asking someone what they are thinkingabout.

well, Mystery,

terms and rules don't necessarily help you learn a language, but it would be a sign of low education level to call multiplication division, for example. that's all i was saying.

here's the next idiom:

hit it off (with someone)

to be friendly with each other immediately.

I met him at this party and we really hit it off.  

 A LOST BALL IN HIGH SKY.
 It  means when somebody didn't know where s\he is, what s\he is doing or how to behave  .

well…actually I see no point in writing idioms here, you can find them all over the internet, but ok…