The zero-person line at District Taco today. (Dave Jamieson)

If you'd told me two months ago that I could head to the District Taco truck at 12:30 p.m. on a Wednesday and find exactly zero people on line, I would've said you have pico de gallo for brains. But that's how it went down today. A line that was typically a dozen or more deep during the milder lunch hours has basically vanished.

I guess it's that time of year when everyone hunkers down and rediscovers their office-building cafeteria.