It was at a sandpaper factory that made sandpaper belts.
My job was to pull a sheet from a roll until it hit a mark. Another guy pressed a button. Lift sheet onto pile. Pull sheet until it hits mark. Another guy pressed a button. Lift sheet onto pile. Pull sheet until it hits mark. Another guy pressed a button. Lift sheet onto pile. Pull sheet until it hits mark. Another guy pressed a button. Lift sheet onto pile. Pull sheet until it hits mark. Another guy pressed a button. Lift sheet onto pile.
For 8 hours straight.
I quit at lunch.