Well, that joke won't work.  When someone told him to go to the national Diet building I was going to have Inuyasha mention that Kagome went on a "diet" after she had the baby, and that it was weird that the government would have an entire building devoted to losing weight (not knowing that it is actually illegal to be fat in japan).  But, the Japanese name for the building doesn't sound like "diet", and they would both be speaking Japanese, so I can't even blame the magical translation that's going on.

I'll post again after one or two more people go.