Supposedly watermelon can make you react the same as if taking viagra. Read this article, I guess it relaxes your BLOOD VESSELS allowing for schWIIINNNNGGGGG!
I think someone has a fruit fetish and made that up.
Now, everytime I'm at the grocery store and I see a guy buying a melon, I'm gonna know why. wink wink wink...he's gotta a "wood" problem.