Say what?

Setting: Our living room, Katie and Isaac watching TV. It's been an intense day of sickness, nose blowing, medicating and doctor's visits. Katie is surfing the net, Isaac is blowing his nose.

Isaac, looks up suddenly: It's hard to take care of kids, isn't it, mom?
Katie: It sure is, dude, but I love taking care of you.
Isaac, pondering: I love that you take care of me.
Katie - feels warm and fuzzy...
Isaac: Mom?
Katie: Yes, baby?
Isaac: I just farted.

So much for warm fuzzies.