If the "Wow, stop it" was actually written by an instructor I can see why the students are having difficulty. That was the most grammatically offensive posting I have ever seen.
To think that it could possibly be written by an instructor is down right scary! Where did this instructor go to school and where did they learn the english language?
If they are from a third world country then they can be excused, if they are from the good ole USA then we all have a problem. To think that an instructor that expresses himself like that is teaching students!