An answer to anything. When not wanting to answer a question, or not wanting to tell the other person the real answer to the question, or if you have no idea what the answer is.
Teacher: Nick what is the answer to number 3?
Student: Shimmy Shanks.

Girl : Did you cheat on me??
Boy: Shimmy Shanks

Mom : What time will you be home?
Son : Shimmy shanks
by Shimmy Shanks January 11, 2010
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Messing around. Joking around. In great dis-belief, craziness.
That boy is a Shimmy Shank.
Stop Shimmy Shankin' around!
You have got to be Shimmy Shankin' me!
by Dave25 September 23, 2009
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The act of pressured, but not fully forced butt sex. Usually in context of an overdone initiation into a club of sorts.
That poor loser Wolfe got shimmy-shanked Saturday at the Shotputters initiation.
by Sketchnult April 7, 2006
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