Was holding Jackson's Electrodynamics in one hand, beer bottle in other, leaned over to peer closer at a figure and whoosh... flying through the air. Hit my head pretty hard on a post, but I was very lucky and was able to keep the beer from spilling. No symptoms of concussion, just the unpleasant bruise. I'll try to medicate that with the beer, or the Jackson, or the synergistic confounding effects of both. At least no one saw me, unlike the time I walked into a metal lampost.