I assume the point of the thread was to basically say, given anonymity, people will act as they think: Look - chances are none of you are above average, everyone just believes themselves to be smart due to our current society in which everyone is praised and told they are a genius for the slightest thing, where we over-exaggerate other peoples failing to make ourselves feel (and therefore believe) we are better, when in fact the chances are exceedingly likely your average.
It's just your egotistical view of the world. (regardless of social class and gender - which do play a part, but are irrelevant in this context as I propose the idea that the average people will nearly always find a way to make themselves believe they are above average).
What's amusing is the way people have described themselves - some have just stated that everyone else around them is an idiot, some point out specific skills (which, by their logic, they are average because I'm pretty sure there will be someone they consider inferior better than them at something), whilst others have used IQ despite all the evidence to suggest the number is meaningless. Heck, others have used specific examples - so what if you outsmarted someone once - I assume you'll have forgotten all those times you were outsmarted throughout your life, or you'll have thought up convenient excuses as to why that occurred...
[/rant]
