On April 1st, they'll say" Just kidding! We're just totally messing with you" On April 2nd, they'll say "lol, we really did mean it, we're just TRYING to piss you off again for shits and giggles. "
That definitely sucks, I don't use Youtube a lot so I don't think I'll be affected if it's only lasting a few days, if it lasts for a longer time then I'll put on my mad face.