Like many fans watching Jake Paul vs. Tommy Fury, KSI took to Twitter to share his thoughts on the proceedings.
The YouTuber-turned-boxer had harsh words for fellow social media star Paul, who KSI said was copying his fighting style in the early goings of Sunday's bout.
KSI also had words for referee Hector Afu, who he accused of "ruining" the fight.
But the hottest takes were saved for last, as KSI stated that he "would destroy both Jake Paul and Tommy Fury" then posted a video in which he called both fighters "trash."
In another video, a laughing KSI said the reason Paul lost is because he wasn't drinking Prime. The energy drink is co-owned by KSI and Paul's older brother, Logan.