Does it mean anything?

Yesterday, in a senior moment, I put my sweatshirt on backwards, and went off to a pleasurable family dinner. No one made mention of my gaffe, which I discovered at bedtime when I removed the garment.

Three explanations come to mind: 1) no one noticed, 2) anyone who noticed was too polite to bring it up, or 3) no one cared, because I am extraneous. I pray #3 is not true.