I don't know what to think. First it seemed like a hoax, but the fact that at least one mod there said s/he talked to this guy's mom on the phone makes it seem like it's not a hoax. Unless the mod was tricked too, I guess. The whole thing is very strange.
Another thing that is strange, "Momma" gave out her phone number and said to call. That doesn't sound right either. Your child has just died and you are on a website less than 3 hours later announcing his death, then give your phone number out to strangers to call you and to beat it all, are sitting around the house to answer the calls? Sounds fishy to me. This person would most likely be tied up with Drs and police officials and family for most of the night.