Driving super slow and swerving back and forth in your own lane, while completely sober, usually passing around a hand-rolled cigarette as well, in an attempt to see how many times you can get pulled in a certain time frame.
"We went pig fishing last night and only got 3 cops to pull us."
by B June 29, 2004
looking around for something, usually something shady or illegal.
"Bob goes pigfishing around 5th Street every saturday"
by sid malana January 29, 2004