Wiz Khalifa Shots Fired at Amber ... Disses her in new song

Wiz Khalifa just turned up the heat in his custody war with Amber Rose by dropping a verse that takes several direct shots at her ... or at least it sounds that way.

Wiz laid down the rhymes for a track with Juicy J, called "For Everybody" -- and on the song there are more than a few hints that point toward Amber being the inspiration.

Just a few of the gems:

- "Man, I fell in love with a stripper, funny thing is I fell back out of love quicker."

- "Bottles be turning these girls into thots, Instagram turning these wives into hos."

- "You all 'bout that money, that s**t that I throw. Just make sure you clean off that pole." 

There are many more ... give it a listen.

And if Amber's ears aren't already burning, there's this: The track was posted with a photo of Wiz and Juicy ... from Wiz and Amber's wedding.