This afternoon while shopping, I overheard a lady speak in Greek/German to her son:
Θα πάμε σπίτι! Θέλεις να πάμε σπίτι, ja oder nein? … Dann Schnauze!
Which is, “(Greek) We’re going to go home! Do you want to go home, (German) yes or no? … Then shut up!”
It amused me that she switched languages in mid-tirade.