Der Max hat's angestiftet (Max abetted me).

A friend of mine was recently in the States and while speaking to a friend in German, someone interrupted and told them it was rude to speak foreign languages in company (butting in on conversations, it seems is widely accepted)
... funny though, I always thought that's is how you learn and I must say, there are alot of very rude people here in Europe, all speaking multiple languages, willy-nilly!
So Juan Maria can/should pull out the Spanish at will :-)