Prepare 3 Envelopes (design.caltech.edu)

If I remember right, this joke is also told in the Hollywood drug-flick "Traffic", from 2000 or so. In the movie, the burnt-out drug czar of the old US administration mentions this joke to his ambitious successor, played by Michael Douglas.

I'd package them like Matryoshka dolls, to explicitly force ordering, since it seems it is relevant in messages.

First heard this as a Kruschev/Brezhnev joke.