Why is my poop a mint green color and slimy?

Well : Generally this can be several things if it's just for a few days it's often the food intolerance something you ate or viral gastroenteritis. If it last longer or has associated pain or fever or bleeding see a doctor primary care doctor for specific diagnosis and treatment

Green stool: hello- its either due to food coloring or a parasite. You could get a stool culture done at any lab for culture and sensitivity and have it checked for parasites and organisms. But mint green sounds unlike anything I have read in text book. thanks