The sentence that doesn't belong a Spanish idiom is D. Mete el pie.
What is an idiom?
An idiom can be regarded as a phrase that gives a figurative, non-literal meaning of an expression.
This idiom doesn't gives direct meaning to an expression.
Therefore, Mete el pie gives a meaning different from the literary meaning in Spanish.
Learn more about Idiom at;
https://brainly.com/question/98076
