If you said no then you may have ass goblins. Ass goblins live in your ass and feed off your crap. They come out everyonce in a while to bite the person behind you(which can be very embarassing). To check if you have ass goblins you need to look at your ass hole and say ASS GOBLINS ASS GOBLINS ASS GOBLINS as loud as you can, and if you have them, they will come out, if not your cool. But for the unlucky ones who do the only way to get them out is to stick amonia up your pooper and swish it around then next time you take a shit, your dead ass goblins will lay there in the toilet.
(popular source generally attributed to "Beavis and Butthead" television show)