Glass was not safe around Tim Rossovich, an All-Pro linebacker for the Philadelphia Eagles.

Rossovich showed the public how tough he was by biting down and eating beer mugs and light bulbs. Rossovich was known on the University of Southern California campus for doing crazy stunts, but it wasn’t until his pro career that eating glass received coverage. People were amazed at his ability to eat glass and survive.

Around 1973, a sophomore at Harvard University decided to prove that Rossovich was not as tough as he appeared to be. After going out with friends, he unscrewed a light bulb and began to eat it. Soon, other students at Harvard were chewing down on bulbs and glasses. The trend ended quickly when universities decided to put an end to the fun.