
Slang: informal language consisting of words and expressions that are not considered appropriate for formal occasions. It's the characteristic language of a particular group.
As every country, Americans have also their own way of speaking, some of the common slangs are:
What's up: How are you?
To ace (test, exam): To pass an exam
A dime a dozen: something so easy to find that it don't have much value
As if: used to suggest that something is not likely to happen
Awesome (adjective): great, fantastic
A piece of cake: when something is really easy
Break a leg: to wish good luck, especially between actors
To cost an arm and a leg: to cost really expensive
By Luiza Gomes