(no subject)

[cellio]

Pittsburgh doesn't have spring and fall. It simulates them by dithering winter and summer. (Source unknown)

Comments

[ralphmelton.livejournal.com]

The first time I encountered it was on zephyr from akk@andrew on 10-May-1996. But the phrasing was "didn't you hear? pgh only supports 1 bit weather and dithers to 2 bit for ICCCM compliance." That phrasing suggests an older source.