1. A laughably arrogant public declaration of humility
2. An attempt to subvert existing channels of discourse towards guerilla marketing (see astroturf
3. When you think something is finally going to get better after years of badness and instead it gets laughably worse
4. A critical moment in the decline of an institution or custom
5. One who implements or creates any of the aforementioned examples of barnhouse
Quit being a fucking barnhouse.