User blog comment:TOkun592/Kenny's Immortality./@comment-1836959-20110504023018

I think that with practice, Kenny can control his rebirth. He is reborn from Carol McCormick by default, not exclusively. As he gains more awareness, I'd bet he could control how long he stays dead and when he re-materializes. I've been thinking about writing a fanfic going into more detail about Kenny's abilities as an Immortal and his journey to fully realizing himself. There's a lot of things left up to interpretation.

As for the whole drinking Kenny soul/Rob Schneider incident, I think it just got messed up with the natural death, and had to "reset" in a way. Kenny dying (inside Schneider) on the flagpole allowed him to fully reincarnate again.