Code bluish

This week I've been teaching an advanced cardiovascular life support course to the junior doctors. (ACLS, in medical certification parlance.) I had just taken them through a role-playing scenario involving a crashing patient, when all of our pagers went off with a code blue (hospital code for a crashing patient). We ran down to the ICU, and I was thinking, wow, best ACLS lesson ever -- well, for the doctors in the course, if not for the patient. But when we got there it turned out that someone had just pressed the button by accident. At least no one could accuse me of arranging a code for educational purposes.