tenérselas tiesas con

== Spanish == === Etymology === (This etymology is missing or incomplete. Please add to it, or discuss it at the Etymology scriptorium.) === Verb === tenérselas tiesas con (first-person singular present me las tengo tiesas con, first-person singular preterite me las tuve tiesas con, past participle las tenido tiesas con) (idiomatic) to stand up to; to affront