If youre a Los Angeles Unified School District student who didn't study for your test today or you're just tired, you've gotta be breathing a sigh of relief this morning as the Superintendent has decided to close all schools based on what appeared to be a credible electronic threat. Pretty crazy when you think about it, as this means 640,000 kids are staying home today. LA kids never get a snow day so we guess this makes up for it. Of course, we also want to say that we're glad everyone is safe and that the authorities and the schools are on top of things, although some signs are now pointing to this all being a hoax. Better safe than sorry these days, we suppose. Some celebs have taken to Twitter to discuss what's going on, with varied reactions: