VGFacts

I actually figured this one out myself while playing it on my PSP today.
Yep, it's true.
Some areas in Mario & Luigi: Superstar Saga are named after sounds of laughter.
Don't believe me?
Think About it:

Chucklehuck Woods?
Teehee Valley?
Gwarhar Lagoon?
Hoohoo Village?
("Hoohoo" being a sound of laughter is debatable but it goes along with the rest just the same.)

Even the main villain is named Cackletta!
(Cackle being an evil sort of laughter)

Man, Nintendo must have been pretty happy when they made this game.

I thought it was pretty oveus, though some people are probably now just getting it. Like Chuckola Cola being a pun on Chuckkle and Coke.

By the way, in Paper Mario: The Thousand-Year Door, Admiral Bobbery's last request before he "dies" is for you to get him Chuckola Cola as his final drink. This is a nice nod to SS, but it makes more since in Japan. In Japan, the drink is called Vintage Red in both SS and TYD. Also Podley's Place (a bar) sells Chuckola Cola/Vintage Red. Bobbery wants wine as his final drink, not soda.
Feel free to take this if you want.