Intermediate level: Nghe mày nói tao mắc ỉa quá

Do you know the second meaning of the phrase "Mắc quá"
What would you say to the driver when you are on the bus and you need to go to the toilet immediately?

What do they mean when they say: "Nghe mày nói tao mắc ỉa quá"?

A very interesting lesson for Intermediate leaners - Real Vietnamese