Personal experience: No. But it's like "breaking the seal" when you're at the bar drinking... once you go the first time, you can't seem to stop.

Scientific explanation for potential high-killing (speculative):
-maybe the fat in the meal helps to metabolize/sequester the THC.
-I've heard that munchies result from weed-induced hypoglycemia. By remedying the hypoglycemia, you remedy the munchies (sometimes) and maybe lessen other effects as well?
-blood goes to the stomach for digestion (instead of to the brain, delivering the drug)

That's just a guess.
But personally, no, I don't think it matters much unless I'm just barely high to begin with. If I'm really baked it doesn't matter if I eat.