Technically, there's only one Original Poster per thread.

I would not hesitate to "cut" a line of Y pax waiting at the rear of the F cabin--most likely because I wouldn't even look to see if they were there. It's bad enough F pax often have to deal with pilots entering/leaving the flight deck.

Similarly, in Y, I will never use the F lav unless the aisle is blocked by the FAs doing service, and I can't wait.