McGregor called Paul the biggest piss bag ever.

Former two-division UFC champion Conor McGregor had a peculiar reaction to Jake Paul's win against Mike Perry.

"Jake Paul is the biggest piss bag I've ever seen in my life. A 40 pound weight difference, he's squeezed the juices out of himself, but he's still shitting himself. Nakisa (Paul's promoter - note), you gotta take him to Vegas, oh yeah, you could never do that, athletic commission testing, real trials, real fights. Bitch asses. You could never do that. And then call up 60-year-old Mike Tyson, who just had a medical emergency on a flight? I swear to God, a big can of bitch piss. Most valuable urine bag ever," McGregor wrote on one of his social media accounts.