Some sayings are
"Estar al aguaite": Be alert or paying attention.
"Irse a la coche guagua": Take advantage of the work of others.
"Pagar el pato": To be accused for something you have not done.
"Quedar como chaleco de mono": To come out badly in front of others.
"Estar con la caña mala": Feel bad after spending the night having a good time without sleeping.
"Parar la chala": Die.
"Más apretado que mano de guagua": To be miserly