What is the CAT reaction to codeine?

Hi, I am a junior in a BSN program. My Med/Surg prof. posed this challenging question for "bonus points" and even after hours of searching on the web, in textbooks, etc., I have failed to find the answer. I thought of "cat" as being shorthand for catecholamines, and asked her if the cat reaction would be medical slang for an overactive and excitable response to a narcotic, rather than the expected drowsiness, that is, CNS stimulation as opposed to the more common CNS depression. Her response: "Nope!!! Keep trying." She did say in response to another email attempting to provide the answer, "The CAT reaction has to do with humans, specifically women. Hope that helps."

Does anyone have any leads or ideas for finding the answer to this question?