The storm 'threw a monkey wrench into' their plans for a picnic. [=the storm ruined their plans for a picnic]
After many years of disappointment, she finally 'got the monkey off her back' by winning the championship.
Our teacher warned us not to try any 'monkey business' while she was out of the room.
(..) That chimp's all right. High-five. Hey, hey, hey. What's going on here? You didn't agree to anything. No, we both just saw the same monkey. Well, I got screwed on the doughnuts. There were none left. There's a vending machine. I can show you where it is. (..)1998 TvShow: Seinfeld Title: The Dealership Season: 9 Episode 11
(..) If you have to speak, mumble. -Au revoir, Le George. -Don't think it can't happen. Puddy, this is a pretty good move for you. -No more grease monkey. -I don't care for that term. Oh, sorry, I didn't know. I don't know too many monkeys who could take apart a fuel injector. I saw one (..)1998 TvShow: Seinfeld Title: The Dealership Season: 9 Episode 11