A guy I worked with many moons ago in a shop in Waterford, MI was installing a windshield in a Beetle. Instead of using the string method to help the windshield along, he was using a screwdriver to push/pry/finagle the windshield/gasket assembly in.
The screwdriver slipped while he was pulling pretty hard
He stabbed himself in the eye

kinda like that look there. Not a happy camper...and totally lost the eye.
Word from the wise. Use proper saftey equipment, methods and tools to get the job done. No need to wear permanent scars or disabilitys from our love for mechanical things.