Are there any poisonous acorns? If you do a Google search, it will sure look like there are! However, upon closer inspection, these toxicity cases are all related to livestock poisoning where the animals consume significant amounts of either oak leaves or raw acorns. You would have to really go out of your way to consume enough acorns to the level that would become dangerous. As you saw in the video, raw, unleached acorns taste terrible! I hope this helps you feel more comfortable about foraging