I was sitting with friends on the street, and we saw what appeared to be a star that was zigzagging. Of course, it wasn't a star. The zig-zagging wasn't in straight lines or anything, it was just moving, faster than any plane, it was very far away (just appeared as a pinpoint of light), and wasn't moving in a straight line. It moved across perhaps 1/3 of the visible skyline in a few minutes. We weren't drinking or on any drugs.