It's cold break that made it into your fermentor that has co2 bubbles in it from the beginning of fermentation making it lighter so it floats. After a heavy fermentation it should break up and settle back down. If not, gently vibrate or swirl (without splashing) your fermentor and they should drop.
Brewing drunk requires several batches of experience, brewing drunk. -mrk305-
It might be horrible, it could be great, but it'll definitely be beer!