True... instead of calling someone an idiot you can simply say:
1> I see you are having ID10t errors...
2> Hmmm... you didn't strain your brain cells much on that did you?
3> Well, the easiest answer isn't always right...
4> So, still hoping for that GED??? (in the USA a "GED" is a General Equiv. Degree for people that dropped out of High School)
5> You really could not find your butt with a map and a mirror could you?
6> It must be sooo discouraging being so ignorant...
7> PEBKC Errors huh? (Problem Exists Between Keyboard and Chair)
8> Don't give up... you have to be right at some point...
9> If I am not mistaken, as you usually are...
or
10> Way to exercise that lack of competence!
