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.
Jake said he's "pretty much on vacation" leading up to the December 18 bout ... saying he's been training non-stop much before the fight was announced.
Tommy's dad chimes in and tells Jake to take his shades off so he can "see the fear" in his eyes ... but Paul shut him down.
"Hey Tommy, Shut your bitches up for me," he said.
The focus switched to Tyson, as Jake bragged and claimed he made more money than the heavyweight champ this year.
The fight is less than a month away ... and it can't come soon enough.