THC has very low toxicity, so the lethal dose is ridiculously high, on the order of 1000mg/kg of body weight, so Spongebob should survive his ordeal, but it isn’t going to be fun. I had a “friend” drug me with an edible he made with a ridiculous amount of THC, and when it kicked in I slipped in and out consciousness, and came to vomiting. The room was spinning so hard I could barely walk and needed assistance. It was a bad day.