So this history teacher in a German primary school sets the kids some homework - find out what your granddad did in WWII. Next day, she's asking questions round the class. "Vell Heike, Vot dit your grandvater do zen?" " Ach, he voz a locomotive driver" "Sehr gut, how are you knowing zis?" " Ve haf der picture und he is vearing his locomotive driver's uniform und you can see der grosse train..." "Ach, gut so, und Fritz, vot did your granvater do, heh?" " Mein grandvater voz a doctor" "Und how are you knowing zis Fritz?" " Ve have der picture von him und he is vearing his weisse coat und has a stethoscope..." "Das ist schone! Jurgen, vot about your grandvater zen?" "Mein grandvater voz an electrician" "Und tell me, how are you knowing zis information?" " Ve haf ein foto und he has two bolts of lightening on his hat!"