A Spanish phrase literally translated as 'to fit like a monkey's vest', used to describe a situation, plan, or outcome that does not fit or work well, or does not meet expectations; similar to 'square peg in a round hole' in English.
Examples
- Spanish: Intenté hacer la tarea de matemáticas, pero quedó como chaleco de mono.
- English: I tried to do the math homework, but it ended up like a monkey's vest.