underwear backwards

The other day I went to bed and my girlfriend noticed I got my underpants on backwards. So she jokes a bit, how I put it on right in the morning and something happend on my work so it was now backward.

The funny thing was, the same day I read //1976 with the same problem. How do these pants turn around during the day?

Last night, as I was getting undressed for bed, I noticed that I had my Marks & Spencers underpants on back-to-front.

I'm pretty sure I hadn't taken them off during the day (why would
I?) which means I must have been walking around with back-to-front
knickers on for about eighteen hours, and not noticed anything amiss

Hello", I thought, that's a bit odd. How did that one slip by you?