• Agarrarse con alguien: To fight someone
• ¿Cómo está el arroz?: What’s cooking or going on?
• Decir sin anestesia: To talk without censoring anything
• Enroscarse: To go to bed. Acostarse (ue) is more commonly used.
• Fuera de paja: To be not joking but talking seriously. Fuera de broma is also used.
• Fumigar: To give someone the boot or end a romantic relationship
• Guindo: A cliff or crevasse
• Jupa de teflón: A forgetful person
• Nos vidrios: So long or good bye
• Pelar la mazorca: To show one’s pearly whites or teeth
• Pelota: A group of friends
• Ser la tapa del perol: To be the very best.
• Tenderle la cama al alguien: To trick or deceive someone
• Trapito de dominguear: A person’s best clothes, worn to church or on special occasions.
• Trepón: A steep slope. Cuesta empinada or cuesta arriba are synonyms

Costa Rican Spanish Gems:

• Estar viendo la raíz del zacate: Literally looking at the roots of the grass, but really means to be pushing daisies or to be dead.
• Estar vivo y coleando: To be alive and kicking.
• Estar sobre la jugada: To be vigilant  
• Estar hasta la cara le duele: To be drunk as a skunk