Are you familiar with Mussorgsky's music about Baba Yaga? (I bet you are.)

http://www.youtube.com/watch?v=5PjIiavyAag

The music makes me think that the chicken legs aren't holding still. Creepy!

This is good music to play when you're angry about something. Put it on and turn the volume up good and high. In our house there was no carpeting on the stairs, so it really helped to stomp up and down the stairs at the same time.
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"Syöjätär can also be used to describe an evil or unpleasant woman..."

Let us bear in mind that the line between a witch and a woman getting old, demented, ill-tempered or crippled could be dangerously thin in the days of yore.