WMTB 

WMTB stands for "what makes them beautiful"

this term is most commonly used on social media sites such as instagram and twitter
usually accounts will have their followers send in photos with the persons name and pronouns

then the account will write a short little paragraph about how "beautiful" the person is

Hey send in your pics for the WMTB on my insta :)

WMTB by Chrissa S April 5, 2017

WMTB 

We Meant To Be (Together).

"WMTB" gurl.

tryna to prove that this is used by putting it on urban for my boo to see.

WMTB by Bobaholics March 25, 2013