fork bomb: n.  [Unix] A particular species of wabbit that can be written in one line of C (main() {for(;;)fork();}) or shell ($0 & $0 &) on any Unix system, or occasionally created by an egregious coding bug.  A fork bomb process 'explodes' by recursively spawning copies of itself (using the Unix system call fork(2)). ...

wabbit: n.  1. A legendary early hack reported on a System/360 at RPI and elsewhere around 1978. ...

the Jargon File, v.4.4.8
Denizens.
Stupid Analyst Tricks.
Et al.