A joke from my grandpa. It's the second grade and class has just begun. Mrs. Wood is doing a spelling pre-test. Mrs. Wood: Mike, what does your dad do for work? Mike: My dad is a plumber. Mrs. Wood: Can you spell pipe? Mike: P-I-P-E. Mrs. Wood: Very good! Mrs. Wood: Wong, what does your dad do? Wong: My dad owns a clothes cleaner. Mrs. Wood: Can you spell shirt? Wong: S-H-I-I... Mrs. Wood: We'll get back to you on that, Wong! Next up is this little Italian kid, Vinny. Mrs. Wood: What does your d…