There's "vague", then there's "Nostradamus", then there's Horoscopes, then somewhere waaaaay further along the scale are the hints from this game. And that scale might be logarithmic.
I finally beat it because I got 5 bananas and everyone who wanted one said "Potassium". Because apparently a clue referring to yellow isn't a banana (even when the only yellow thing in my inventory is a banana), and something about a nice curve isn't a banana when the only curved thing in the inventory is a banana.
Graphics are pretty cute though.