Jake Paul let the verbal jabs fly during his presser with Tommy Fury on Wednesday ... and he did it from the comfort of his pool in Puerto Rico.
Jake tuned in remotely as he took on the whole Fury fam -- including heavyweight champ, Tyson -- and while he looked rested and relaxed while wearing sunglasses, a pineapple print hat and sipping on a coconut, it was far from cozy.
Tommy's dad started it off ... taking serious issue with Jake's wardrobe choice. It got so heated, John squared up with the TV that was showing Paul via live stream.