Not me but a coworker. Worked for a food importer and distributor back in the early 90’s and had never heard of needing any kind of certification to operate a forklift. Coworker who gave me a ride and got me stoned on the way to work every morning has a minor accident while on the tow motor. He is embarrassed and panics. Rather than stopping and taking a deep breath he tries to straighten out the error before the boss finds out and ends up puncturing the drywall above the office with the forks. It was 35 years ago, I still remember thinking how easily those forks could go through me