AB released the savage post on his Snapchat just before Brady's Buccaneers took on the Panthers in Carolina ... showing an old pic of Tom and Bundchen -- but with his head photoshopped over Brady's.

In the photo, Brown is smiling ear-to-ear ... and it's another clear shot at his former teammate, who is in the middle of a messy breakup with his longtime partner.

Brown didn't stop there, though ... 'cause after Brady's Bucs got walloped by the lowly Panthers -- Brown took to social media again to continue to roast TB12.

In that post, Brown photoshopped Brady over his own body ... from his infamous MetLife Field incident last season. AB captioned the photo with nothing more than some dancing finger emojis and the hashtag, "#Putthats***On."

Of course, this is not the first time Brown has gone after Brady this season ... you'll recall, just a few weeks ago, he threw up an old picture of him hugging Gisele following Tampa Bay's Super Bowl win over the Chiefs.

Brown also shaded Tom over his mid-training camp hiatus in August ... writing on his Twitter page, "Tom Brady manipulate the game gets 14 days go home get his mind rt lol."

The two used to be good buddies -- in fact, Brady actually let the former star receiver live with him and Gisele when the two first teamed up in New England and then again in South Florida.