dingbattery

The amalgamation and demonstration of nonsensical, forgetful, and impulsive behavior that manifests in the outward appearance of a dingbat. The individual typically offers some value in a relationship but deviates to atypical behavior and conversational norms.

Not dissimilar to a nincompoop and corresponding nincompoopery, however the nincompoop typically does not offer value.

These messages from Tina make no sense. I can't tell if it's dingbattery or skullduggery.

Dingbattery

The act of being a dingbat

“That’s some real dingbattery”