Common Slang Expressions used by Americans every day
(To) ace (v.) (a test, exam, etc.): To pass a test, exam, etc. really easily. ex: "Robert aced his physics exam."
A dime a dozen (*to be a dime a dozen*): Very common; Said of something that is so easy to find that it don't have much value. ex: "Girls like her are a dime a dozen" (There are lots of girls like her)
All: Used to mean "very" in phrases such as "He was all nervous" (He was very nervous), "He was all happy" (He was very happy), or "so" in phrases such as "Don't get all emotional."
All-ears: When someone says "I'm all ears", they are telling you that they are listening to you, that they are giving you their undivided attention.
All-nighter (n.): A period of work or study that lasts all night. Most often used with the verb "pull" (To pull an all-nighter) - ex: "We pulled an all-nighter in order to finish the project."
Ammo (n.): Short form for "ammunition". ex: "I ran out of ammo."
Angle (n.): A devious plan; a scheme. Often used with the verb "to work". ex: "He claims to be on the level, but I'm sure he's working some angle."
Around-the-clock: 24/7, all day and night, non-stop; ex: "The house was being watched around the clock."
As if!: On its own, this phrase is used to suggest/emphasize that something is not likely/ not going happen. ex: "He thinks I'll go out with him. As if!"
Awesome (adj.): Great; Fantastic; Super: ex: "That was an awesome movie."