Your high school chem teacher: "Quintuple bonds can't hurt you, they don't exist!"
Group 6 transition metals: "Hold my electron configuration while I form this unholy abomination."
That chromium-chromium quintuple bond is the chemical equivalent of finding out your ex is dating five people simultaneously. Theoretically impossible, emotionally devastating, and yet somehow exists in nature. Advanced organometallic chemistry doesn't care about your high school textbook's feelings!