Bacteria on the base of ones penis. species Bacteriuos baseous. This species of bacteria migrates to the base of ones penis from either the anus or meatus.
George "No I didn't was my hands after I peed, I only touched the base of it"
Candice "Dude haven't you ever heard of base bacteria?"
Jeff "Hey did you see the plates on that vet?"
Brad; "What the craviator, ha, ha."