Funny how the same expressions can mean one thing to one species and something completely different to another.
The old saying "Opening up a can of whoopass" goes right over a fishes head. I mean, it'll just cause a little ripple in the water.
Plus "Opening a can of worms" does not depress them in the least. Instead they throw a fish party and chow down for hours!
-Mel Gibson, In His Diary at the Clinic, After a Recent Crack-Up