Kevin Hart Goes Down Hard! Looks Like a Setup (VIDEO)

Kevin Hart ended his world tour with a major bang -- as in the sound his body made when it took a nasty fall onstage.

Kevin's last stop on his "What Now" tour was in Honolulu Saturday night, and as he made a triumphant exit ... he suddenly got taken out! Flat on his ass.

He explained what went wrong, later on his social media, and it sounds like someone on the crew is gonna have some explaining to do. Or maybe that person's already been fired.