Igraviert is a Swiss German word meaning "engraved." It's a fascinating word because it's a regional variation of the standard German word "graviert," making it unique to this song's dialect.
In the lyrics, it refers to a tattoo: "Is Tattoo uf dim Rugge Häsch du dir 'Gotthard' igraviert" (You have 'Gotthard' engraved on the tattoo on your back). This word choice perfectly captures the song's authentic Swiss German feel and adds a touch of local flavor.
Beatrice Egli sings this one in Swiss German, and it is a love song to a heavy-metal boyfriend. He loves AC/DC, Guns 'N Roses and Metallica, and he even had "Gotthard" (a Swiss hard-rock band) tattooed on his back: "Häsch du dir 'Gotthard' igraviert" (you had "Gotthard" engraved). He acts like a hard rocker and hopes it impresses her, but "wenn d'Nacht chunt, dänn wirsch du mega romantisch" (when the night comes, you get super romantic).
In the second verse the joke flips. She rides on the back of his Harley, knows exactly how to pose, and admits that even if nobody would guess it, "han au ich Bock uf Rock" (I'm in the mood for rock too). The chorus is her request: "Rock mis Härz, chum ah mini Sitä" (rock my heart, come to my side), wild or tender, she doesn't mind which.
A tip for learners: Swiss German bends standard German spellings. Härz is Herz (heart), chum is komm (come), bisch is bist (you are), and cheibe guät means "damn good".