Napugal Yezha

Napugal yezha goloy zhopoy - lit. "your naked ass sure did scare that hedgehog." Used to denote a self-defeating threat or protest.
For example:
"Alaska will secede from the Union!"
"And lose the federal infrastructure dollars? Napugat' yezha goloy zhopoy sobirayeshsya (you're planning on scaring a hedgehog with your bare ass)?"

Another example:
"Until funding is restored to the Community Studies department, Community Studies students will boycott all classes and school facilities."
Administration response: "Ha! Napugali yezha golymi zhopami! As long as they pay tuition, they can boycott all the classes they want."

Zhertva Aborta

Zhertva Aborta - lit. "abortion victim". An insult, signifying someone so sick and useless that their mother obviously tried to abort them, but was too stupid to succeed, and ended up with a child who resembles an underdeveloped, half-aborted fetus. The nearest American English equivalent is that scene in Batman Returns where the Penguin's parents get rid of him.
(kudos Marina S. for the idiom and explanation)