BI Idioms - with body parts

It means to begin a new experience wholeheartedly: jump in with both ____

It means to insist on something - put one's ___ down.

It means to annoy someone: get on one's ___

It means not to know or understand what is going on: to have one's ___ in the clouds.

It means to annoy someone - put/get one's __ up

It means to change your opinion about something or decide not to do something you were planning to do: to have a change of ____

It means to be practical and wise - to have one's ___  screwed on

It means to decide you are going to do something and to put a lot of effort into doing it - put one's ___ to ...

It means to act unfriendly towards someone, ignore: give someone the cold ___

It means two people thinking together can come up with better - two ___ are better than one