7 shocking moments in WWE that made Vince McMahon lose his cool

#2: Brock Lesnar goes off script

Lesnar went off script in a bloody match against Roman Reigns.

The WrestleMania 34 main event between Brock Lesnar and Roman Reigns was not one to remember.

A rematch of their bout three years earlier, fans didn't care for Brock's lengthy reign as Universal Champion, and still detested the Big Dog for being heavily pushed in recent years.

A slow-paced match which saw the Beast once again topple Reigns, the only memorable spot came when Lesnar threw an elbow that busted the Big Dog wide open, which was completely off script.

Whilst fans may have appreciated seeing the crimson mask, Vince McMahon certainly didn’t, with blood being banned as part of the company’s PG rating.

Following the match, the Beast Incarnate and McMahon got into a heated argument backstage, ending with Lesnar hurling his retained Universal Championship at the Boss as he stormed off.