The I Love the 90s tour went blooper reel in Houston when Treach lost his balance and ended up knocking Bushwick Bill off of the stage.

Bill was rapping his verse on the Geto Boy's hit 'My Mind Playing Tricks on Me' when Treach tried to join in. Unfortunately, the Naughty by Nature rapper tripped and then plowed into the little fella -- sending him crashing into the crowd.

Back in 1991, Bill was notoriously shot in the face by his teenage girlfriend during an argument. He survived the incident after being pronounced dead, although did lose his eye.

[Related: They are making a Bushwick Bill documentary.]

In other words, he had no problem shaking off his latest bump in the road off.

Here's another angle: