I have had it for 35 years.
I believe my colon has a brain, for instance it knows when I want to go out.
It knows when I am out.
It knows when there is not a bathroom around.
It knows when I get into a car.
Actually it even knows when I am about to get in a car.
It for sure knows when I might eat a Whopper, it gets so mad I have not had one in about 20 years.
Old Mike