anybody's guess
To "call it even" means to agree that there is no winner in a contest, or no debtor in an exchange.
This is not an idiom. Some people call their loved one by a pet name like "honey" or "darling" or "sweetie."
a zero-sum game
Don't call me, I'll call you
It's not really an idiom. It means "what are you thinking about."
It is not an idiom, it means your nose is itching.
RFP is not an idiom. It's an abbreviation.
The Anyones was created in 1994.
When someone challenges a false statement you've made or threat you didn't intend to follow through with.
if you mean 'is anyones skin chewy?' than i suppose so.
"Sieve" is not an idiom. See the related link.
It's not an idiom. It means the tip of your nostril.