The Pond
From Homestar Runner Wiki
The Pond is a foggy spot where Strong Bad and Coach Z go fishing in email "lures & jigs". It is stocked with fish and makes a suitable location for a romantic date with a Wagon Fulla Pancakes in montage. A few ducks live there too, seen in the email/game duck pond.
The Pond might also be the body of water seen in the easter egg from rock opera.