dude: i got my flowers and chocolate ready for my wife for st-valentine's day yet i'm missing the gift for my mistress for mistress day that's coming right before
the day before st-valentines, february 13th, which is known as the official mistress day
"dude: i got my flowers and chocolate ready for my wife for st-valentine's day yet i'm missing the gift for my mistress for mistress day that's coming right before" What is the definition of "mistress day"?