Tom Brady Posts Thirst Trap During Fishing Outing, Eli Manning Chimes In

3:17 PM PT -- Eli Manning has entered the chat ... letting Tom Brady know he wasn't too impressed with his catch.

Speaking of catches ... TB12 clapped back with a zinger of his own -- referencing David Tyree's Super Bowl-saving helmet reception that helped the Giants beat Brady's Patriots back in 2008.

Ultimately, Brady's seven rings beats Manning's two ... but considering both of those came against the Pats, Eli's got the right to throw a friendly jab here and there.

Tom Brady's clearly thankful for retirement ... sharing his relief over not having to play in crappy Buffalo weather anymore -- all while sending out a friendly reminder he's hot A.F.

The G.O.A.T. shared some snaps from his post-Thanksgiving fishing and golf outings ... and judging by the visuals, he didn't overdo it on the turducken.

TB12 ditched his shirt for the boat trip ... and after snagging some queen snapper, he posed with one of his catches.

"A little warmer than it looked in Buffalo last night," Brady said ... a reference to the snowy "Sunday Night Football" matchup between the Bills and San Francisco 49ers.

Of course, Brady is based in Florida now ... so he no longer has to brave the cold on the gridiron like he did countless times in his 23-year career.

Brady did have to work his new day job as he provided color commentary for the Dallas Cowboys vs. New York Giants contest on Turkey Day ... but given his roundup, he certainly made time to enjoy his holiday weekend after getting off the mic.