tell me about it

When somebody sais something about the situation your in and its obvious you be like Yeah tell me bout it or when something is said that is obvious

Mannn we been waitin in line for like an hour
Yeah tell me bout it

make a crack about

Make a crack about means to laugh at or make fun of something that is interesting or tell a joke on someone

From Family Guy Seaonn 2 Eposide 2
superman: I killed a hooker. She made a crack about me being faster than a speeding bullet.

I just met this girl yesterday who thinks she's hot, but a lot of my friends make a crack about her being such a butterface

For those about to rock

The first song to include cannons since the 1812 Overture

This is an AC/DC original, nobody can copy it's greatness in crappy remakes.

Are you sure about that?

The phrase that John Cena said after a kid said that John Cena is the eye of the tiger.

"John Cena is the eye of the tiger."
"He is the eye of the tiger."
"ARE YOU SURE ABOUT THAT?"

don't worry about it

A overused phrase people use when they are too lazy to answer a simple question.

However, it is not overused if you are asking a question that pertains to another person and not you.

It is also used to hide a secret people are using.

Example 1

Zack: What time does Burger King open?
Stan: Don't worry about it.

Example 2

Zack: Why is your son wearing a sweater when its 105 degress?
Stan: Don't worry about it.

Example 3:

Zack: Did you take my money I was going to use to pay a fine?
Stan: Don't worry about it.

All about u

A more sophisticated way to say "I like u" or "I'm crushing on u" ect. Usually utilized when its a little more than a crush and more longstanding.

Boy "wanna know a secret?"
Girl "umm sure?"
Boy "I'm all about u..."
Girl "...akward"
Boy "jk"
Girl "um ok..."

Ill think about it

NO

Ugly girl, "Will you go out with me?"

Devin, "Ill think about it..."