We may have found the one thing that can stop Brock Lesnar -- a slippery floor ... 'cause the former WWE World Heavyweight Champion took a tumble while making his entrance during 'Monday Night Raw!!'
Lesnar was was on his way to join forces with Logan Paul, Bron Breakker, Bronson Reed and Drew McIntyre ahead of Saturday's Survivor Series WarGames match ... when the blooper seen around the world happened.
As Brock tried to time his scream with the fireworks, the Beast Incarnate took a fall .