Bodied Yu's don't do bad things in general so they don't really get away with anything, it's extremely rare to find a shithead or bad bodied yu. It's theorized that shitheads would rarely develop the kind of mindset that leads to bodied yu form because of not wanting a form of trasendence that gives them bodies that they think is uneasy, it's easier for a shithead to become a dosu than a bodied yu.
ukshadow said: Not to mention that bodied yukkuri have more paste, and thus more brainpower to give them a (relatively) greater intellect.
This is actually questioned at least once. Absolute volume of the paste might not hold much relationship with yukkuri intelligence. Extreme case being, House-yu are not that much more idiot than normal Yu.
We got the too dumb to live tag. Yes, average yukkuri is still not breaking the bottom of the scale, and that's not talking about the smarter nicehead/shithead. :)
One could argue that dumbshit bad dosu's could also be an argument against "more filling = more intelligence", though I think that house yu's work using proportional compression based in the stages of their life so adult = adult and so on.
Maybe more filling DO make a yu more intelligent but it depends of the inherit nature, since in general good yu's are the ones that tend more to become smarter, disregarding their size and ammount of paste, so maybe a more positive nature leads to them having a better use and processing of their filling which equals more intelligence in the majority of the cases, reason why good bodied yu's in general and good dosu's come off as smarter.
While there are a few cases of smart bad yu's, they tend to be extremely rare (as rare as the extremely dumb good yu) so we could consider them more an exception than the rule.