Who knew? If you knew it was today, why didn't you tell me? Would it have hurt to give a shout-out and say, "Hey, Bon, today is National No Bra Day. You can let your yabbos run free until midnight."
If you had informed me, I wouldn't have felt like a big boob when someone asked, "Did you know today is National No Bra Day?" No, I did not. For me this random Monday was more like No National No Bra Day.