Can be used to refer to birth defects that result from inter-familial childbirth.
I was having intercourse with Johnny, but we had to stop. I didn't know what to do with his paginis.
Person 2: Dude, you might end up with a two person threesome...
Person 1: Huh?
Person 2: Dude, she has a paginis!
Not to be confused with the vapena, the pegina, or the vagipenialginas
Hermaphrodite - oh, that's my paginis, do you like it?
You - I'm not sure. How does it work?