Class Lab

In my lab class we had to divide a agar dish in 4 quadrants and take our unwashed hands and make thumb prints on 3 of the squares except the last one. On the last square we used rubbing alcohol and disenfected our thumbs. It was kind of gross because I washed my hands prior to the experimennt and I forgot I wasn't suppose to, so I decided to touch the handles and the chairs in the room so I could get my hands dirty.
I had so much growth on my dish, and yes nothing grew after I disenfected my thumb....yuck! I'm washing my hands all the time now....