Actually this odd behavior that Indians do is not actually done with an intent to show their stupidity
I did came across a presentation / video once about Indian Mode of thinking , which is based on their so called Ganja military strategist
Now this person's theory was
When you deal with enemy here is how you should do your day to day task
1- Pretend to be stupid
2- Be agressive and do some damage (i.e Spys , killings , Bombings , Terrorsim)
3 - Pretend to be stupid again
4- Offer a Hand shake to enemy make him think you have changed
5- Then plan more evil plans against enemy (i.e Spys , killings , Bombings , Terrorsim)
6- Cry about every thing , that you have been violated , abused
7- Pretend to stupid and un aware of worldly tasks, pretend to throw flower around
8- Back stab when you get chance
9- While the dagger is in his back hug him and claim you are his best friend
10- Pretend to be stupid and un aware of worldly tasks
repeat from 1
Most of these Hindu fundamentalist follow these teachings quite closely
It was one of the most strangest thought process ideas I have ever heard which did not fit any reasonable person's mind
This constant "Crying by Indians" is part of this philosophical process