RANDOM

You are about to be halfway home, when a troll comes along!! But, this is not ANY troll. It's a RANDOM troll. And when it comes to trolls, those are the utter worst. He says that you have to answer this riddle correctly. If succeeded, you're allowed to pass, but if NOT, well, this story is rated G, so, ya, you're basically a goner... Well, um GOOD LUCK;)