Now, when I say "my bearded dragon", I really mean "my bearded dragon", not me.
Ahem. SO, I have an interesting story of how my bearded dragon, Winston, was tripping over half a Benedryl capsule that I, being a total idiot, left on the floor. At first, I was absolutely TERRIFIED that he would die or something. >_<;; But I looked up the LD50 (lethal dose that kills 50% of rats tested on) and it was MUCH MUCH higher than what he had taken.
Relieved, I watched him for the rest of the night as he wobbled around wide eyed, moving his head all around very slowly. He seemed pretty freaked out, as if he saw a giant monster or something. D: I felt bad, but it was also somehow kind of funny.
After a while it wore off and I gave him some banana as a treat. He's just fine and still alive today, around 4 years old.
..That probably wasn't the type of story you were looking for, was it..?