Es ist Brauch, sich zu Weihnachten Geschenke zu schenken.

Pronunciation: Es ist Brauch, zikh tsoo Vite-nahkts Ghe-shenke tsoo SHENKEN.

Meaning: It is customary to give each other gifts at Christmas.

The word 'Brauch' (custom/tradition) is essential for discussing German cultural practices, and this phrase helps you describe important seasonal traditions in German-speaking countries.