nonsensicality 

when someone or something is absolutely ridiculous, retarded, mental, psychotic, or doesn't make any sense. Often referring to someone who has an instability of the brain, or an uncanny gift to make others feel boring due to their complete normal behaviour.

Oh my god! that person doing the pony tail flip is showing so much nonsensicality!

nonsensicality by brynnska November 26, 2010

nonsensicalism 

A system of beliefs and/or actions, based upon false and/or irrational notions.

People who believe the Earth is 6000 years old, because an ancient book of tales says so, while ignoring the overwhelming geologic evidence to the contrary, are engaging in nonsensicalism.

nonsensicalism by Peter the Catfish Eater. August 4, 2021