Disfigurement

EEEEEEEEEEEEKSSSSS!
Pardon my hysterics but I realised there was a long scratch on my left cheek leading from the ear to my nose yest.
I have ABSOLUTELY no idea how that came about.

Didnt see that in the morning yesterday.
Didnt see it in the afternoon yesterday (or I didnt notice?)
Noticed it when I got home last nite. (Prayed hard no one will notice tmr)

No such luck. Colleagues commented early this morning.

Colleague A: Oh dear! What happened to your face?
Colleague B: Aiyooo.....very long scratch ley.....issit ur hair? Nails?

Me: (Looking at my nails) ah? no lah..my nails so short....n I dun think my hair is tat sharp lah...

Thank goodness it is not a deep scratch.
And so the mystery continues on the origin of my disfigurement.....