Is it safe to eat off of partially tarnished silver? My wife and I were visiting some friends who were recently married and had received heirloom silver as a wedding present.  It was obvious it had been recently polished, but some of the pieces still had a little tarnish on them.  Is it ok to eat off of that, or should I schedule a doctors appointment to get checked out for this reason?
If it's pure silver, it's fine. Silver isn't toxic. Well...if you get some colloidial silver, and you dose yourself with it every day, you'll have some disturbing symptoms. The same is true of almost all metals. Iron pills, for example, are worse, but we commonly cook with cast iron. Metallic silver is sometimes used as a chelating agent, so it can purge your body of other metals you may have absorbed.

If its heirloom electroplated silver, it's probably still fine. If it's heirloom pewter, coated in copper, then electroplated with silver, its still fine (because pewter doesn't tarnish, so the tarnish is either silver or copper) but I wouldn't eat anything acidic with it, because it'll leech lead into your food.

Note : There is no way you have pewter. That was a joke.