Lost in the murky depths of internet lore, some unknown wag coined the terms “nope rope” and “danger noodle” as quirky alternate names for snakes. As is the way with the internet, these catchy names quickly became memes that linger in cyberspace. The term “nope rope” could also be applied to cord in glass containers. In fact, the Spanish word for cord is ‘cuerda,’ which literally means ‘rope’.  Cord is a streak of glass that has a somewhat different composition from the surrounding glass, altering its physical and optical properties. When a cord streak causes high tensile stresses, it can lead to reduced performance, primarily in the form of delayed breakage after filling. Proper cord measurement techniques are therefore essential to detected and rejecting excessive cord. So when it comes to highly stressed cord, just say ‘nope!’