sentences:  At this last holiday, the children observe a custom called the "Pfingstquack" (“Whitsun” is "Pfingsten" in German).The "—quack" part of the custom’s name refers to a rhyme that the children recite as they go door to door begging for money with their gorse-decked wagon.The rhyme generally begins with the line “Quack, Quack, Quack”.