Definitions by NYCbAsed

Wallin 

Slang that originated from youth of NYC.
-When one is acting like a fool or acting crazy from their usual norm

-What you respond with when you don't agree with someones statement at all.

-"Why are you so jittery today? You're WALLIN!"
-"Derek thinks Stacy is hot. He's wallin".

Wallin by NYCbAsed April 5, 2017

Mack 

A slang that is originates from NYC.
This word is used in substitution of chill .

One would use this instead of chill out in more serious situations, to show someone how serious they really are.

Person A: "Hey bro you wanna try some cocaine tonight?'
Person B: "MACK MACK its a school night!"

Mack by NYCbAsed April 5, 2017