In One Piece, some people were shown eating the Devil Fruit such as Sabo and 2 CP9 said it was disgusting or tastes really bad. However, Luffy was shown eating it at the beginning without a complaint. In the anime series, he ate it for being upset; in a movie, he ate it for dessert. Another case was Buggy the clown but he doesn't stand much of an argument because he technically swallowed it whole by accident. Also with Chopper: he ate it when he was a deer. It it really tastes that bad, wouldn't he follow his instinct as an animal and stop eating it?
TL;DR: Does Devil Fruit taste bad?