i feel that

When someone says something you agree with.
I understand, I get you, or I know what you mean. Used as a term of understanding.

Guy 1: Bro I just got a new car with rims.
Guy 2: I feel that.
or
Guy 1: I knew I should've gotten the boxer instead of the retriever
Guy 2: with the boxer you'd probably pull more so I feel that bro

feeling down

to feel sad and depressed

I was feeling down when i didn't get the thing i was waiting from long time.

in my feelings

When you feeling a type of way about something..usually about a person

I was in my feelings yesterday about Jasen.
* I was feeling a type of way

Feel no ways

To not give a single fuck about something; Not to care about what just happened.

I feel no ways about school. (I don't care about school)

I felt no ways knocking down those pylons. (I didn't care when I knocked down those pylons.

mixed feelings

to feel positive about one aspect of something and negative about another( Typically: get ~; have ~; give someone ~)

I have mixed feelings about John. Sometimes I think he likes me other times I don’t.

feel yourself

To feel like you are the best, either in general, or at something, as in the metaphorical, cartoonish representation of feeling sexy, when one rubs ones hands around ones body.

Example 1
Dude 1: Damnnnn, that nigga beat him for the number one spot!
Dude 2: Yea, you know he's feelin' himself right now. Look at that face.

Example 2
Dude 1: How many straight wins do you have? Not as many as me, that's for sure.
Dude 2: Yea, ok, feel yourself, homie.

Feeling empty

Feeling alone and depressed with no feelings but agony and never being happy, just blank

“I steal the look when you’re not with me I wrote the book on feeling empty”- Lil Peep ft. Horse head GIRLS