Riddle time!

Question: What's a food that could be a fruit or a vegetable...is green like a pear except a bit lighter...has a long green stem...is semi-round-ish but more like a sphere that is being squeezed at one end...and has like these little prickly things on it that are about large pepper size (and kind of look like that too)?

Answer: I haven't the slightest idea!! But there's one right by me. It's scary.