Rhabarberbarbara: Eine Quatschegeschichte - Lied - Deutsch lernen

In a small village, Barbara is renowned for her rhubarb pie. She opens a bar to sell it, attracting regular customers, including three barbarians. These barbarians, known for their beards, visit a barber who also enjoys Barbara's pie. The barber becomes known as the Rhubarb Barbara Barbaren Bart Barber. A special beer is introduced at the bar, adding to the unique experience. The story concludes with a toast to Barbara's delightful rhubarb pie.

What unique feature did the barber have in relation to rhubarb?

What did the barbarians enjoy with their rabarb pie?