Berkeley Bowl has random crap like this. I passed by this and literally said “What the hell is that! What the hell ticked that fruit off that much that it has horns!?” it’s called Kiwano. Google it. http://en.wikipedia.org/wiki/Horned_melon
I’m not sure if it was riped, but tasted like bitter banana. Those seeds do not help the taste either. $5 well spent? I don’t think so.