Dear 100 Hour Board,
You can tune a piano, but you can't tuna fish!
Is there more to that joke than meets the eye? Or is there an extended version? I remember laughing out loud the first time I heard this, but I can't remember if it was the context or the joke in context that was funny. Is that really the whole joke?
-Out of context
As I recall, the beginning of the riddle is "What's the difference between a piano and a fish?" Otherwise, yeah, that's the entire joke.
FYI, it's also an album by REO Speedwagon.
...it was the first thing I thought of.
The joke relies on internal open juncture ambiguity, for what it's worth.
I once laughed uncontrollably for several minutes at a friend describing the Incredible Hulk going on a rampage in Mafia . . . yeah, I'm betting on the context.