Patrick Mahomes is leaning into his dad bod era ... going shirtless by the pool during his vacation down in Mexico -- with a couple bebidas in hand, no less.
The Super Bowl LVIII champ and in-game MVP kicked back and relaxed Thursday, lounging around a lavish Los Cabos beach resort in standard gringo attire ... board shorts and a straw hat. The Chiefs QB looked like he was enjoying himself -- with Brittany right by his side.