ElderlyJokes How Grandma Ended Up Marrying Grandpa. This Will Make You Go ROFL. A grandmother told her grandson how she ended up marrying Grandpa. I was in my 20s and the man I was dating left for war. “We were in love,” she recalled, “and wrote to each other every week. “It was during that time that the I discovered how wonderful your grandfather was.” “Did you marry Grandpa when he came home from the war?” The little boy asked to his grandmother “Oh, I didn’t marry the man who wrote the letters. Your grandfather was the mailman.” See more Previous joke A Dying Grandma Tells Her Grandchild. Next joke Grandpa Was Showing Johnny Around The Farm.