A dirty, male penis. The male with a Rusty Shank has sex with multiple partners, generally over the course of a day, and stabs that knob in any hole he can penetrate. The hallmark of the Rusty Shank is neglecting to wash the genitals in between sexual encounters.
After banging his secretary at the office, Roger left and picked up a prostitute for a quick $10 anal. He then went home to his wife and fed her a Rusty Shank while watching Netflix.
by Eaton Holgoode December 7, 2015

Did you hear about McSplooge committing his 455th murder. I heard he did the shank and wank technique.
by Jascebalon July 9, 2016

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
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 10, 2010

Your a mr shank
by Mike real cast February 11, 2014

by J-WALE June 16, 2009

The act of masturbating with one hand while making a 'shanking' motion with the other, knife-filled, hand.
by efildrot September 24, 2013

