Bock auf is a hugely popular German slang phrase that means "to be in the mood for" or "to fancy" something. It's the kind of authentic phrase you'll hear constantly in real-life conversations but might not find in a textbook.
In the song, the girl "hat Bock auf Shopping" (is in the mood for shopping), setting a casual, modern tone before she sees the boy on the train. Learning this phrase is a perfect way to make your German sound more natural and fluent.
This song tells a story that probably feels familiar to a lot of us: seeing someone amazing and being too shy to say hello. CRO sets the scene on a beautiful, warm day. A guy is on a train, relaxed, when a woman gets on and he immediately thinks, "wow". His inner voice is screaming at him, "Sprich sie an / Das ist das Schönste was du je gesehen hast" (Talk to her / That's the most beautiful thing you've ever seen). But he freezes. He calls himself a "Versager weil ich mich doch nicht traue" (a failure because I don't dare to), and she gets off the train, becoming the "Liebe des Lebens" (love of his life) that he'll never see again.
But here's the twist! The second verse tells the exact same story, but from her perspective. She sees him, thinks he's cute, and sits next to him on purpose, hoping he'll talk to her. She's thinking the same thing: "bitte, bitte, bitte, bitte komm, sprich mich an" (please, please, please, please come, talk to me). She's just as nervous and just as unable to speak. The song perfectly shows the sad and funny irony of two people wanting the same thing but being held back by their own fear, leading to a missed connection where both think they've lost a soulmate.