Unless you grew the shrooms yourself, picking random shrooms that you see is probably one of if not the stupidest drug decisions you can make. The very poisonous mushrooms are extremely potent in that they have symptons similar to acetaminophen poisoning, as well as delerium. When your liver tries to remove the toxins from your blood stream, the toxins end up killing your liver. Then, all of the other poisons that would have been filtered end up in your blood stream, along with the original poison. Furthermore, you're pretty much unaware of what's going on because of the delerium. Eventually, the pain goes away and you might think you are better, but by that point you're pretty near to the coma. So probably a bad idea to eat any non-poisonous, but that's just some medical advice.