pasar por la piedra

Literally, “to pass through the stone”. It alludes to a round stone on which the victorious Roman centurion sodomized the defeated warlord and warriors, in plain view of the victors and the other defeated soldiers, as a form of humiliation and domination. In modern colloquial language, it means having exclusively physical sex with someone, performed in a rough and aggressive manner, though usually consensually.

pasar por la piedra (first-person singular present paso por la piedra, first-person singular preterite pasé por la piedra, past participle pasado por la piedra)

1. (idiomatic) to humiliate
2. (idiomatic) to have one's wicked way (with)

• “pasar por la piedra a alguien”, in Diccionario de la lengua española, Vigésima tercera edición, Real Academia Española, 2014