They were afraid of Stalin.
One. They stick the bulb in the socket and wait for the world to revolve around them!
A milkshake.
Because he was Snowd en! (according to my friends this joke has been around for awhile, but I hadn't seen it yet, and wanted to share the goof)
We're Snowden!
The Soviet Onion
None! In Soviet Russia, light bulb changes you!
M'otherland"