my frustration! left? handed lug nuts

I had my 9 year old son out in the garage helping me, and he is familiar with the left handed lug nuts on the left side. What he didn't realize(and I knew) was that there were a couple replacement RH studs on the left rear!! He was struggling over there with the impact, and getting a bit miffed, which of course made me chuckle!! I couldn't take it anymore and showed him the replacement studs!!

Just trying to get him to investigate the "why" and get past the "how"!! Geof