Da! Nyet!

Here's a handy phrase in Russian:
Eta yedAH?

Just point to things like boogers, or toe jams while asking for added comic value.

Or if that's too low brow for you, skip the stupid humor and point to weird-looking pickles or that thing you can't tell if it's bread or a brick. Sure to offend the proud cook when used too often, though.

Now what could it mean?