Dressing down

I learned an interesting female dating tactic last week: dressing down. Apparently, the girls will dress ugly on purpose—a concept which completely baffles and freaks with my mind. I learned of this recently, while hanging out at a friend’s house the night her roommate reluctantly went on a date. The girls were discussing this concept while in her closet, though with the door open they were still in earshot.
For the record, when the roommate emerged, I really didn’t notice the intended lapse in tasteful attire. I suppose the subtlety of it is all part of the effectiveness?
After days of research and pondering, here is why I think girls might pull this stunt:

A) She is upset because the dude hasn’t clearly communicated whether he is interested or not…i.e. he’s slow with the DTR.
B) She doesn’t like the guy but still committed to the date.
C) She is saving her “hot” outfit for the post date run-in…i.e., as if to say, “Dude, you totally missed out.”
D) Girls are weird and a little crazy
E) I have no freaking clue

This blog leaves me with one disturbing question: has a girl ever dressed ugly for me? Yikes. What about the rest of you dudes?