I noticed that the ones who go "weeeeee" and the ones who go "hmmmm" are rare, at least in my two villages. I wish they would come around more often though cause they really are fun.

If they are females that make those sounds so as soon as they are 18 year old make them as parents and how to knew which ones made those sounds as kids I wright in after their name like Tuna weee or Tuna hmmmm, thier offspring will well make them sounds. By doing that I got all gigly kids and also kids that say weee