mewing

When someone is "mewing" because they have a fat double chin and try to cover it up with "mewing" Aka "looksmaxxing"

1:"hey Jon" 2:"....."

:1"Oh, he can't speak he's "mewing"
:3"What's that?"
:1"Pretty much just trying to make your jawline look more defined"
2: "ah, I see"

Mewing is when you make your jawline look more sharp or defined
Mewing, a technique in which the tongue is placed on the roof of the mouth, is purported to make the jaw more square,