Tom Brady is currently by a pool near an ocean ... but he's clearly in desperate need of some more water -- posting a shirtless selfie Friday that screamed he's thiiiiirssssstyyyyy!!!
The New England Patriots legend dropped the peacockin' pic on his Instagram page ... knowing damn well he looked sexy as ever.
Chillin' in the backyard of his new Miami mansion -- Brady busted out some smoldering eyes, a light 5 o'clock shadow, some pumped-up pecs and a gold chain for the snap .