Steve-O -- Launches Bottle Rocket ... OFF HIS NOSE!! (VIDEO)

Steve-O had a super epic 4th by strapping fireworks to his skateboard and firing rockets all over a skatepark.

The "Jackass" alum was in rare form -- using his board and his nose as the launching pad for a couple of bottle rockets. What's really amazing here is that Steve didn't take out the skaters who were watching his stunts ... but he came really close.

He did catch a few embers in his eyes though.