Darvocet is a weak narcotic, they'll get you high, but you'll have to take quite a few. You wouldn't want to snort them, you would have several grams of acetaminophen stuck in your nose. Grind them up, dissolve in cold water, let the acetaminophen settle out, drink the water (will probably taste like shit) I don't think there is such a thing as tolerance to acetaminophen toxicity, high doses should be avoided.