IDIOM（俚語）：pigs might fly.

MEANING（意思）：something that is very unlikely when you don't believe a word of what someone is saying.

SENTENCE（例句）：

Johnny told me that his mother is going to buy him a laptop for Christmas, and I told him 'pigs might fly'.

Johnny告訴我，他母親在聖誕節時會送他一台手提電腦，我實在不敢相信（這會是從他媽媽口中說出來的）。

IDIOM（俚語）：till the cows come home.

MEANING（意思）：to do something forever.

SENTENCE（例句）：We can talk till the cows come home this weekend, because I am off work.

這個周末我們可以盡情聊天,因為我不用上班。

IDIOM（俚語）：pig-out

MEANING（意思）：to eat a lot of food very quickly.

SENTENCE（例句）：The wedding has an all-you-can-eat buffet. I can't wait to pig-out.

婚禮是吃到飽的餐宴，我等不及要大塊朵頤了。

IDIOM（俚語）：the lion's share.

MEANING（意思）：take the most of something, the largest part, the biggest piece.

SENTENCE（例句）：Thanks to the mothers for doing the lion's share of the work.

謝謝母親做了大部分的工作。

IDIOM（俚語）：snake in the grass.
MEANING（意思）：someone who can't be trusted.
SENTENCE（例句）：Don't tell him, he's a snake in the grass.

千萬不要告訴他，他完全不可以信任。

IDIOM（俚語）：kill two birds with one stone

MEANING（意思）：do two things at the same time.

SENTENCE（例句）：I can kill two birds with one stone by cleaning my house and rearranging my furniture.

我可以同時打掃房子並重新安排家具的擺設。

IDIOM（俚語）：put the cat among.the pigeons.

MEANING（意思）：to cause chaos or bad feelings.

SENTENCE（例句）：He really put the cat among the pigeons when he told everyone about what happened.

他真是讓大家感到錯愕，當他說出發生什麼事情之後。

IDIOM（俚語）：donkey's years.
MEANING（意思）：a very long time.
SENTENCE（例句）：

My friend and I haven't seen each other in donkey's years. We talked about everything for almost 8 hours at Starbucks last night.

我和我的朋友很久沒見面了，昨天晚上我們在星巴克咖啡，無話不談的聊了八個鐘。