Putin denied that the Russian special services were debriefing Snowden. “I would prefer not to deal with such matters because it’s like shearing a piglet -- there’s a lot of squealing and not much wool,” Putin said.
Luckily the BBC already did the research for me:
The piglet line appears to be an authentic but little-used Russian saying. One Russian source tells the Monitor that the full version begins: "Arguing with a woman is like shearing a piglet etc."