What do you call those crescent-shaped fruits again?

I was eating at Cabot's yesterday, along with much of my extended family that was visiting for Easter. When we were ordering, the waitress asked me if I wanted French fries. I did not want them; I remembered that if you don't ask for them they give you a crescent-shaped piece of cantaloupe. Now, I don't really like cantaloupes, but for some reason at that moment I wanted one. So I started to say, "doesn't it come with one of those..." only to realize that I couldn't think of the word for cantaloupe. I swished my hand in a crescent shape several times, not thinking of what to call it. Eventually I gave in and just said, "one of those fruits."

The worrisome thing is that this kind of thing happens to me more than one would think.

-Philip