<jargon> /bawd barf/ The garbage one gets on the display screen when using a modem connection with some protocol setting (especially line speed) incorrect, or when someone picks up a voice extension on the same line, or when really bad line noise disrupts the connection. Baud barf is not completely random, by the way; hackers with a lot of serial-line experience can usually tell whether the device at the other end is expecting a higher or lower speed than the terminal is set to. *Really* experienced ones can identify particular speeds.
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Nearby terms: batch processing « bathtub curve « baud « baud barf » Baudot » Baudotbetical order » Baudot code