The act of masturbating in a lurking fashion. This may include, but is not limited to:q
-lurkin off to pictures on social networking websites
-lurkin off in any means of mass transportation (ie. Bus)
-excusing yourself from a social gathering only to go lurk off in the public bathroom.
"Did you see those new pics Jill put on the facebook kid?"
"Boy did I ever, infact I was lurkin off to 'em just this morning."