chupar

The everyday verb for to suck — a straw, a lollipop, a wound — and, colloquially in several countries (especially the Southern Cone), to drink alcohol heavily: salieron a chupar toda la noche. Also central to several fixed expressions worth knowing before the tables.

• El bebé chupaba el biberón tranquilo. — The baby sucked calmly on the bottle.
• Nos quedamos chupando una paleta bajo el sol. — We stood there sucking on a popsicle in the sun.
• Salieron a chupar con los amigos el sábado. — They went out drinking with friends on Saturday.

Missing the colloquial 'to drink alcohol' sense in the Southern Cone — a learner expecting only the literal 'to suck' meaning can be confused by salir a chupar, which has nothing to do with lollipops.

• expression Estar para chuparse los dedos — Extremely common fixed expression praising food as delicious ('finger-licking good') — documented in Spanish dictionaries as a set phrase of praise for a dish's flavor.
• expression No chuparse el dedo — Fixed expression meaning someone isn't naive or easily fooled ('I wasn't born yesterday') — distinct in meaning from the plural chuparse los dedos, despite the near-identical wording.