[Owen is demonstrating what will eventually happen if the alien host stays in Carys for too long]
Owen: Preasure mounts in the brain, the lungs collapse (making breathing impossible) and then-
[the rat explodes violently]
Owen: Rat jam.
Owen: Preasure mounts in the brain, the lungs collapse (making breathing impossible) and then-
[the rat explodes violently]
Owen: Rat jam.
[Owen is demonstrating what will eventually happen if the alien host stays in Carys for too long]
Owen: Preasure mounts in the brain, the lungs collapse (making breathing impossible) and then-
[the rat explodes violently]
Owen: Rat jam.
http://www.tv-quotes.com/shows/torchwood/quote_11507.html