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1.
To sign your name, using your penis as a pen, and feces as ink.
I took it out of her ass and signed my John Shitcock on her back.
by Daniel Riggs May 30, 2007
 
2.
Signing your name on some ones back using, your penis as a pen and feces as ink.
After I was done bangin her ass I wrote my John Shitcock on her back.
by Daniel Riggs May 29, 2007