clavársela

Colloquial "to screw someone over" or "to get one over on someone" — se la clavó a su socio, "he screwed his business partner over." Built from clavar plus reflexive se and object la, it implies deceiving or cheating someone, often in a deal, bet, or transaction; in some countries it also carries a coarse sexual sense, so tone and context matter.

• El vendedor se la clavó con un coche defectuoso. — The seller screwed him over with a defective car.
• No confíes en él, siempre se la clava a alguien. — Don't trust him, he's always screwing someone over.
• Sintió que se la habían clavado con el precio del alquiler. — He felt like they'd ripped him off with the rent price.

This is a fixed colloquial chunk, not literal — don't translate it word for word; it means to deceive or cheat someone, not anything physical.

Often confused with clavar.