I study Languages and get quite a few different, but all quite irritating responses:
either 1) Wow....that sounds really difficult.
2) I speak German/French/Spanish too! *insert broken sentences and crappy pronunciation*
3) 'Oh so you're gonna be a translator then?'
or
4) 'Whats the point? Everyone speaks English anyways.'
apart from #4 being the most ignorant it's #2 which is possibly the most annoying/depressing. I can't count the amount of times (esp during freshers week) when i've had the who are you/what do you study/where do you come from conversation with new people and got bored of them while they're stood there trying to work out the German past tenses. Funny to watch, but goddamn annoying after the nth time.