In the computer world spooge (sometimes spoo), is a piece of jumbled, inexplicable, esoteric, chaotic, or incomprehensible code. It might also be some random or incorrect output from a program. The Jargon file first records this usage in 1995.
This probably came (PI) from the slang usage of spooge, where it means semen, or sometimes it can be verbed to mean 'to ejaculate'.
Spooge was in the Jargon file until version 3.0. I don't know why the Jargon file dropped it. It is still in use.
Webster1913 has Spurge, which looks like it might be related. I don't think spurge is still used anymore.