the act of playing piano. although not a formal term such as practice or perform, the term pianoing is specific to having a damn good time playing the piano, regardless of it's practice or performance.
One who will make false accusations about people and be unable to back them up.
They will convince themselves that the accusations are real, and will never admit that it was made up.
Peter Paranoia claimed that Joe was stealing all of his tools from his shed, then Peter Paranoia accused somebody of urinating in his chocolate biscuits and lemonade.