“Want to see my teeth?”That’s Norman Thayer’s introduction to his daughter’s boyfriend. And that snappy opener sets the “biting” tone for the rest of this performance.Norman is forgetful, unreasonable, cantankerous, hard-of-hearing, opinionated, rude, forgetful, surly, narrow-minded, anvil-stubborn, and … forgetful.So am I. That’s why I got the role. Yep, ...