monkey
When the tree falls, the monkeys scatter. (Chinese.)
in
When a leader loses power, his followers become disorganized.
Throw a wrench into something.
in
This idiom or expression means:
Make something fail.
Screw something up.
A. Did you get your loan approved?
B. Almost, but my ex wife throw a wrench into the process by telling them I was broke!!
Also:
Throw in a monkey wrench.
Monkey on one’s back.
This idiom or expression means:
A problem that won’t go away.
My house is definitely a monkey on my back now. I can’t afford to keep it, and I can’t sell it either!
Grease monkey.
This idiom or expression like phrase means:
A mechanic.
An auto mechanic.
Even monkeys fall from the tree.
Even experts make mistakes.
