An animal that is genetically designed to sustain itself on human seminal fluid. It's body is optimally designed to extract its food from its host. A symbiotic relationship develops between peenigea and human host. A peenigea will give fantastic felatios on a regular basis in order to survive.
"Wow, my peenigea must be hungry, I'm getting chaffed"
מאת Francis McMurphy 9 בפברואר, 2008