Hacerle la ley del hielo a alguien, “to apply the law of ice to someone,” means that a person or a group agrees to stop dealing with someone. The Diccionario del español de México of El Colegio de México gives the example “Sus compañeros de trabajo le hicieron la ley del hielo por envidia” (His coworkers gave him the ice treatment out of envy). In 2018, Milenio listed the ley del hielo among the forms of workplace harassment.
Darle el avión a alguien, “to give someone the airplane,” means to pretend to pay attention to what someone says. In one of the dictionary’s examples, a speaker says that the end of a term shows whether the students valued the teacher or only gave the teacher the airplane.