It was Christmas Day 1977, and my dad and 6 year old daughter were seated in wooden chairs at his dining room table. All of a sudden, she farted loudly and said, "Grandpa, that's your Christmas present." He laughed so hard that he almost fell off his chair. I rushed in and was totally embarrassed, and my face was all red. I kept apologizing. That was the last time I saw him laugh, as he passed away the next morning