As/when/if the spirit moves you British clause
Someone does something when they feel it is the right time.
I love home-made food, but I'll eat out if the spirit moves me.
He travels abroad when the spirit moves him.
I have no idea what he will do, he usually acts as the spirit moves him.
It is unclear information about the origin of the expression, but a source says that it came from the work 'The Quaker Doctrine of the Holy Spirit' in 1959.
someone believe that they are allowed to do whatever they want in their own home
It is always advised that wherever you go, a man's home is his castle