This idiom means that the sexes should be treated the same way and not be subjected to different standards.
Meaning you will not get something when you want it or someone doesn't want something for you. say you are selling an item and some one doesn't want it. they might say 'I'll buy it when pigs fly'. it just means you will never get someone to say yes to you when you ask for something.
This idiomatic expression is used when it is not clear who or what caused something.
When a person pays dearly for something bad he or she did in the past, the chickens come home to roost.
People whose behaviour is strictly controlled go over the top when the authority is not around, which is why most teenagers have parties when their parents have gone on holiday. The parents are the scary authority figures, but the cat's away and the kids are the mice partying and enjoying their freedom.
A white elephant is an expensive burden; something that costs far too much money to run, like the Millennium Dome in the UK.
This idiom is usually used to refer to men who don't want to get married, when they can get all the benefits of marriage without getting married.
There's no need to do something yourself when you have somebody to do it for you, usually trivial matters.
If you come within a whisker of doing something, you very nearly manage to do it but don't succeed.
A wild goose chase is a waste of time- time spent trying to do something unsuccessfully.