This phrase is typically used to describe a situation where someone gets another person excited or hopeful about something, but then does not follow through or deliver on it.
Examples
- Spanish: Juan siempre me promete que vamos a salir de viaje, pero nunca cumplimos. Siempre está calentando la pava y no tomando el mate.
- English: Juan always promises me that we are going to go on a trip, but we never do. He's always heating up the kettle but not drinking the mate.