What does «jarabe de pico» mean in Spanish?

Words without substance, promises that are not to be kept, mere talk. Also insincere manifestation that does not correspond to true feelings or intentions.

Examples of use in Spanish: "el jarabe de pico es típico de políticos".

"¡Oh, qué mujer!, ¡qué jarabe de pico el suyo!".

"Como que todo eso es jarabe de pico".
(Jarabe de pico, a muchos hizo ricos) A phrase that indicates that the ease of speech and promises that will not be fulfilled can be very useful to prosper in some businesses.