1. A protocol packet or item of email (the latter is also called a
{letterbomb}) that takes advantage of misfeatures or security holes
on the target system to do untoward things.
2. Disapproving mail, esp. from a {net.god}, pursuant to a violation
of {netiquette} or a complaint about failure to correct some mail- or
news-transmission problem. Compare {shitogram}, {mailbomb}.
3. A status report from an unhappy, and probably picky, customer.
"What'd Corporate say in today's nastygram?"
4. [deprecated] An error reply by mail from a {daemon}; in
particular, a {bounce message}.
[glossary]
[Reference(s) to this entry by made by: {cursor dipped in X}{letterbomb}{mailbomb}{shitogram}]