Said jokingly in response to being asked "¿dónde?" ("where?") because it rhymes.

When one is ready to leave or gives up on something.

Semi-vulgar expression meant to express hopeless situation one does not want to take part in anymore. Usually expressed when someone was involved in something before (a discussion, a project, a problem, maintaining a device like an unreliable car) and came to conclusion that it is helpless or not worth continuation. It shall not be confused with more general and vulgar "idź w chuj" which is the equivalent of Russian "иди на хуй" which means "get the fuck out of here". This form uses more formal expression meant to address person with respect and the reception to Poles sounds like "sir, could you please get the fuck out of here?". It may be translated as more vulgar form of "to hell with it", eg. "to fuck with it". It should be understood as an equivalent of "take this out of my sight". The expression itself is not considered offensive or insulting although the usage of vulgar world "chuj" limits it to informal and casual usage only.

The double-Moin is an expression of greeting a group of people, mainly used by natives of East-Frisia (North-Western Germany), as well as by the tourism industry. Unlike the single Moin, it's very rarely followed by a name.

Reductive or oversimplified.