This may be a little confusing to describe.
So, I was with a friend of mine the other night. He is a regular marijuana smoker and has poor health habits such as his diet. Sometimes when he smokes weed he gets warm and needs to lie down next to a fan and relax for a minute. This night was different; after a few seconds of half laying down half sitting up, he falls backwards and begins to go into what would be described as a grand mal seizure. I have to say that I was pretty terrified. He snapped out of it within about 30 seconds to a minute. My father is an emergency room doctor and a physician; I disregarded my friend and asked my father what he thought, to which he said that he needs to get it checked out. My friend has never had a seizure before this and he said he felt absolutely fine afterwards and he felt as if I had woken him up from a dream. He doesn't believe that he needs to be checked out. Is it possible that it is a one time thing? I need some advice on how to handle this.