It's Oppai Day!
Some of the following may NOT BE SAFE FOR WORK, HOME, or ANYWHERE...
Oh, "PI Day"...that's very different then. Nevermind!
Sorry for the mixup, we here at MTYW have in the past celebrated today as both White Day & as Pi Day, I'm sure I won't err like this again. (For those trying to learn Japanese おっぱい = oppai = breasts...but I'm sure you figured that out!)
(Boy-oh-boy am I gonna get flack for this post...)