the act of being in an intoxicated state and wanting to find a dead fish to put in a hated one's yard to stink it up
Erin: "Hey Jen, I'm drunk and I really want to get revenge on Tyler for cheating on me."
Jen: "We should go dead fishing!"
Erin: "You're right! We should! If we throw it on his roof it will stink up his yard faster and it will be harder to find."