Figure Of Speech (For The Non-Natives).
It's once again very consequential that non-indigenous English speakers learn how to deconstruct figures of speech for the sole purpose of understanding the bulk of English expressions/ contexts/ phrases out there. And by out there, I mean through the English World.
You don't have to be a linguist to understand the aforementioned concept (even though that helps to be quite candid). But all you need to know/ do now, is to follow the link below and click/ read up on every highlighted word there.
http://en.wikipedia.org/wiki/Figure_of_speech
Goodluck!