stack = S = stale pointer bug

stack puke n.

Some processor architectures are said to `puke their guts onto the stack' to save their internal state during exception processing. The Motorola 68020, for example, regurgitates up to 92 bytes on a bus fault. On a pipelined machine, this can take a while.

--The Jargon File version 4.3.1, ed. ESR, autonoded by rescdsk.