I find most dumb people ARE happy... most intelligent people can be aware of their dumbness. I don't know where I am thought...
Okay; Scientifically, what makes you happy? An increase in the secretion of Serotonin. High levels of serotonin in the brain can cause a person to do some dumb shit. Hyperactivity being one example. Signed and sealed.
I'm not dumb and I'm feeling pretty happy right now katyismename - you are quite the good looking young lass