Man vs. Man
Your weakness or fatal flaw
What is an Achilles' heel?
Costs a lot of money
What is costing an arm and a leg?
Ignoring someone
What is to give the cold shoulder?
To gossip or reveal a secret
What is to spill the beans?
Not feeling well; feeling sick
What is feeling under the weather?
What is at the drop of a hat?
Not being direct; to talk about obliquely
What is to beat around the bush?
To get something overwith; to do something you don't want to
What is to bite the bullet?
A crazy way of doing something that has a meaning/purpose
What is a method to my madness?
The thing not talked about that probably should be talked about; the issue that everyone avoids
Approaching things in the wrong way
What is barking up the wrong tree?
Exhausting an issue that has already been discussed or resolved; persevere for too long
What is to beat a dead horse?
What is to burn the midnight oil?
To attribute or owe something to
What is to chalk it up?
Fake tears
What are crocodile tears?
What is a dime a dozen?
An annoyance; a minor flaw that ruins everything
What is a fly in the ointment?
Don't be ungrateful; receive kindness graciously; don't question the worth of gifts
What is don't look a gift horse in the mouth?
Saying something is easy
What is shooting fish in a barrel?
Small act with a large consequence, especially coming after a string of related events
What is the straw that broke the camel's back?
To make fun of someone
What is to bust one's chops?
To make it up as you go along
What is by the seat of one's pants?
Chatting, talking, gossiping.
What is to chew the fat?
Getting a rise out of someone.
What is to get your goat?
To not like something and refuse it in a snooty way.
What is to thumb one's nose?