GERMS!!!
I'm a freshman. This means I need to take General Ed courses. I'm also an Italian major. This means I'm not required to know any math or chemistry, so I get to take awesome General ed courses, such as Mushrooms, Molds, and Society.
In class we had a hands-on observation lab, part of which was taking two sterile agar plates, touching one with your hand, and then using Purell and touching the other, to see what would grow. When we got our plates back, I was disappointed to see I only had two tiny colonies of bacteria growing on my before Purell plate, though my professor was impressed with my good hygiene. We were allowed to take the plates home and do whatever we wanted with them, so I decided to leave mine and see what would happen. I was also left with a pristine agar plate, thanks to the germ-fighting power of Purell, so I decided to see what would grow if I touched it with super-dirty hands. I didn't wash my hands for a whole day, going to class, work, and riding my bike as normal before putting my nasty fingers all over half of the plate. I also decided to see what was growing in my mouth, so I rubbed a Q-tip all over my tongue and put it on the other side.
Here are the plates after three days. As you can see, I am a pretty disgusting individual:
This is the original agar plate I touched in class. The yellow colony is pretty gross, it has red stuff leaking out of the top. The brown colony was originally white.
On the left is where I touched the plate with my finger. On the right is where I touched with with a Q-tip that has been in my mouth.
In conclusion, my mouth is pretty gross.