(Jon gives Garfield some mashed up cat-food and sets down his own microwavable hash-browns next to Garfield's cat food bowl)

It's liver-flavored.

(sarcastically)

Mmm, delicious...yuck! (when Jon comes back with a fork he does not notice that Garfield has taken his hash-browns and has put his own bowl of cat-food where Jon left his own breakfast; Jon accidentally takes a bite of the cat food)

AGH!! Oh, LIVER...!! (he runs to the sink and vomits)

(smugly)

Actually, it's liver-flavored.