Wiktionary
loopiness
n. The state or condition of being loopy; craziness.
Usage examples of "loopiness".
Still with my eye on this apparition I eased quickly into the driving seat pulling the door to behind me and it was not until then that I discovered that the purpose of the hopscotch merchant was not to demonstrate the standard of loopiness in rural Wiltshire but to distract my attention from the back of my car where someone had been biding crouched down on the floor.
Scott-Bentinck's rare and extraordinary mental loopiness, though in fairness it must be said they give it their best shot.