The driving test where I was from involved going through first a 4-way stop and then a 2-way stop intersection. Of course, the 4-way one is marked as such but the 2-way one just says "Stop". Anyway, my brother does fine on the 4-way, then assumes the next one is 4-way too. The instructor actually reached across and yelled stop in a panicked voice to avoid an accident.
The checkbox for "drivers must engage in expert driving to avoid you" was checked.