Riesengroß literally translates to "giant-big" or "enormous". It's a compound word that emphasizes the immense scale of something, making it much more impactful than just saying "big".
In "Volles Risiko", Beatrice Egli uses riesengroß to describe the night: "Heute Nacht wird riesengroß" (Tonight will be gigantic/enormous). This conveys a sense of excitement and anticipation, suggesting that the night will be filled with grand, unforgettable experiences as they take "volles Risiko" (full risk).
"Volles Risiko" is about throwing caution to the wind for love. Beatrice Egli asks her partner if they feel the same rush she does, the adrenaline and the pull to go further than either of them planned.
The chorus is the heart of the song: "Wir gehen volles Risiko" ("We're taking the full risk"). Tonight there's no room for maybes. She wants to fly to the moon with this person, take the leap, and go all in on the feeling, even if it means going too far.
The bridge admits the danger is real: her heart is racing, she can't control it, and they might be pushing things further than is wise. But that's the point. The song celebrates the thrill of letting go completely for someone, "never knocked out," always ready to do it again.