Ah, I've had those conversations. Only mine are a little more like this...
*7 or more hours after the stomach has been completely devoid of food, around 3:00 PM, having had no breakfast*
Stomach: heeeeelllp..... heeeeeeeeeelp....
Brain: La la la... no one's here... hmm... I don't seem to be doing anything right now. Should I play Super Mario Land? Nah, done that too many times lately. Well, maybe I could watch an episode of Love Hina... love.... hina........ *goes into lengthy monologue about episode order and the differences between the anime and the manga and into character descriptions that the brain already knows quite well, in a kind of third-person narration to itself, which is sent to the mouth but turns out too weak a signal to be compatable with the mouth's hardware, resulting in full mouthing playback, but no audio playback. Also sends a signal to the legs to randomly wander around, while the subconscious navigates enough to avoid walls most of the time*
Stomach: Damn you, brain! Hello! Pick up, brain, please!
Brain: "Konno 'Kitsune' Mitsune is perhaps one of the less used characters, but her part in the story can be very important..."
Stomach: grrr... yo, head nerves!
Head nerves: uhhh.....
Stomach: Do me a favor and kick brain's proverbial ass, before we have a complete energy failure down here, will ya?!
Head nerves: durrr. *stabstabstabstabstab....
Brain: Whaaaaaa!!! Who put this thing here. Can't anyone around here close doors?!! And- oh, that's really great, no pencils in the desk again. *goes on like this for 30 minutes*
Stomach: Raise the setting!
Brain: Graaaa... hey, wait a second... My head hurts!
Stomach: oh goody, 50%...uh.. oww..... hel..p..........
Brain: *goes on with rambling thoughts for a while, paying the headache no heed, then suddenly, another 30 minutes later, notices...* Wait a minute... my stomach hurts! My head hurts, and my stomach... oops, I kinda did it again, didn't I... *tells arms and eyes to coordinate such as to read watch* Oh, I thought it was 1:30! I should probably eat lunch now, huh...
Stomach: ................
Brain: *randomly wanders between the pantry and the refridgerator another 15 minutes, trying to decide what to eat* Heck, we just went to the grocery store a couple days [editor's note: this means a week] ago, and now we're out of everything again! Except hot dogs, and sandwhich meat, and milk, and bread, and tamales... but those all sound horrible...
5 more minutes pass. The stomach completely stops all function and the other organs begin to follow.
Brain: Okay, I think I'll just have hot dogs... again... *sends instructions to heat the hot dogs for a minute, prepares a glass, straw, forgets what it was doing, remembers, gets out the milk, gets the plate out of the microwave, goes back to get a napkin, sits down, gets back up to get a fork, then sends instructions to eat, taking 45 minutes to finish 4 hot dogs.*
Speaking of which... *stops typing and goes back to eating her second hot dog now*