Guess these crazy English phrases | EXPLAIN ME THIS

Guess these crazy English phrases

OK guessing time.

Can anyone tell me what these mean? (BTW, they aren't connected in any way!!)
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1) How's it hangin?

2) "I don't give a rat's arse!" or "I don't give a dam!"

3) Bob's your Uncle! (No this doesn't mean that your uncle is Bob!!)

4) It's your shout!

5) Ok, you twisted my arm.

6) In the noughties.

7) Pass the dead horse.

8) Yeah it was cheap alright, cheap and nasty!
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If you guess right you are a legend.