I played a B
When a musician hits a bad note and tries to cover it up by saying it was just a random accident and not their fault.
'I played a B' he said, as if the entire band had agreed to mess up together.
'I played a B' she said, while the piano was still ringing like a bell and no one believed her.
'I played a B' he said, as if the audience didn’t see him hit the note like it was a punchline.