Idioms Using Parts of the Body - American English

He has lived here his whole life, so he knows this town like the back of his ________.
(This means "to know something very well")


The traffic is so bad this morning. What a pain in the ________! 
(this means "annoying situation" or "irritating problem")

I have a feeling that he's not the right person for me. I can feel it in my ________.
(this means "to have an intuitive feeling about something")

Please tell me all about it. I'm all ________!
(this means "I'm very interested in hearing what you have to say")

I know you're nervous about our sales meeting this morning. Don't worry - I've got your ________. 
(this means "I will defend and protect you")

He has lived here his whole life, so he knows this town like the back of his ________. (This means "to know something very well")