Champagner-Becken is a fantastic German compound noun, combining Champagner (Champagne) and Becken (pools or basins). It literally means "Champagne pools".
In this song about wanting an impossibly luxurious life, Nina Chuba dreams of bathing in pools filled with champagne. This over-the-top, decadent image perfectly captures the song's hedonistic and aspirational fantasy, making it a truly memorable phrase.
This song is a massive, fun fantasy about getting everything you could possibly want. Nina Chuba isn't shy about it; she lays out a huge list of desires, from the simple to the completely over-the-top. She wants "Immos... Dollars... fliegen wie bei Marvel" (real estate... dollars... to fly like in a Marvel movie). It's a daydream of ultimate luxury, where breakfast is "Canapés und ein Wildberry-Lillet" and you have "Flamingos in mei'm Garten" (flamingos in my garden).
What makes the song so great is that it's not just about selfish greed. Amidst wanting to buy an island and bathe in champagne, she also wants to take care of her people. She dreams of buying "ein Haus für meine Mama an der Küste von Catania" (a house for my mom on the coast of Catania) and wants all her friends to live on her street. It's a song about wanting it all, not just for yourself, but to share with the people you love.