Megosztott hang

Am I the a hole for laughing at my wife when she's upset that me and sister had a make-believe wedding when I was 4 and she was 6? My wife "Sara" (24f), my sister "Maya" (26f), and I (24m) were watching some of the home movies my parents had made for Maya and I. After some fun little movies, it got to an embarrassing little movie when my sister and I had a make-believe wedding. I was cringing at myself as I had forgotten that phase where I thought I wanted to marry my sister. I was 4 at the tim