Kato Kaelin compares his experience in the O.J. Simpson case to O.J.'s weapon of choice -- a double-edged sword.
Kato was out to lunch with GF/news anchor Leyna Nguyen when our photog asked him about today's 20th anniversary of the slow-speed chase.
Kato -- who clearly heard the sounds of O.J. burying the murder glove outside his guest house -- thinks the case doesn't resonate with young people, who probably thing the Bronco chase has something to do with Peyton Manning.
Kato is unwavering ... that O.J. did the deed.