>>29452764
I've had a friend get flashed on a subway. Essentially, they get stunned from shock. It's an event that you don't expect and your brain needs time to process what's going on.
The shock was just enough time for the guy to nut on her shoes.
So it's not too unusual that they just stand there going, "omaigosh..." before acting.
Some woman become terrified and scream though.