What is Spanner Monkey?
1.
A largely useless individual whose only career prospects are to work in maintainence departments painting walls and replacing light-bulbs. May have questionable habits such as an excess love of porn, language that would make a soldier blush and a equally useless son.
"Why can't one of those spanner monkeys come up here to fix the lights?"
2.
When someone has been idiotic, foolish, or incredibLy fucking stupid.
"Hey Jim! Wheres my hat?"
"On your head you spanner monkey!!!"