I used to always find it weird when I'd get home from Halloween, dump my haul on the table, and there would be these weird loose unwrapped caramels. It looked like someone had a bag or tin of them and just gave them out individually to kids. Those were always slightly scary to eat.
Anyways so my answer is caramels, both because they were definitely poisoned, and because they also just aren't very good. It's hard to suck through an entire one, your mouth gets so nasty, it's kindof gross.
Does the next poster choose mild, medium, or spicy (or insane infernal death) food when given the option?