(1) I worked really hard to get an “A” on my math test, but I only recieved a “B.” Oh well, I guess that’s the way the cookie crumbles. So, in this sentence it simply means that you can’t always control everything that happens.
(2) John, isn’t this the fifth time you have been late to work this week? You’re walking on thin ice mister! So, in this sentence it means that John is in danger of being fired.
What idioms can you think of and does your primary language or culture have any that are unique to where you live?