No, I didn't participate today.
Though I've had my own experience of "No Panty Day." And even a "Side-B" day.
Call me gross, or whatevs, but it's true.
There was a time when I had classes from Monday to Saturday, and whole-day extra curricular on Sundays. So during that time, I almost had no wash day. I was always out from sun up to almost midnight.
Then one unfortunate day, I just ran out of panties to wear. To think that I have more than two dozens of panties! Hah! And because the night before that, I came home so late and so tired, I wasn't able to wash even one. So that day, I just slipped on my jeans, without undies.
Then there was another day I also ran out of panties. Since the panty I used the day before wasn't THAT soiled (I use panty liners kasi), I turned to Side-B, put a panty liner, and went on to class.
I even tried the Side-B thing with socks.
And so I have learned my lesson. The semester after that, I promised to myself that never again will I get classes scheduled on Monday and Saturday. And never again will I have extra curricular on Sundays. So that I will have two rest days and one wash day.