Here's a really good one. She looks like she wasn't expecting it at all.

ENF bride (from another thread).

ENF.

Maybe she thinks we can't see her. I guess she never figured out the peek-a-boo concept.

ENF.

ENF.

End.

ENFs (from other threads). Does anyone know who the first girl is?

Point De Fuite (1987)
 

From a short French film by Pierre Drouot-- "Point De Fuite" (1987). A collection of these films was released on a DVD titled "Spiritual Exercises". Catherine Aymerie as the Professor.

Anyway, the film begins as an art professor arrives to teach her class. Upon entering the classroom, she finds all of her students nude and their clothes in a pile at the front of the room. They are silent. The professor is a little shocked at first but refuses to be intimidated. One of the students gets up and writes on the board "do like us"...inviting the professor to take off her clothes as well and join them in unashamed nudity.

The professor is conflicted briefly, but decides again that she won't be intimidated...she accepts the challenge. She strips, and begins to teach her class nude. While her back is turned and attention is on the board, the students retrieve their clothes and dress. When the teacher turns around, she gasps as she takes in the sight of her now dressed students. She is the only one now naked, standing before everyone without a thread of clothing on.

There is suddenly a knock on the door...the stricken professor tries to cover herself as the student say with one voice "Enter!" as the door opens... The professor is humiliated...

Another ENF of that first girl (Samantha).