Überblick translates to "overview" or "grasp". It's a compound word that literally means "over-look", referring to the ability to see and understand the whole picture.
In "Keine Ahnung", the singer expresses a profound sense of confusion and disorientation, singing "Verliere Tag für Tag den Überblick" (I lose the overview/grasp day by day). This word perfectly encapsulates the feeling of losing control and understanding in a complex world, making it a key to the song's central theme of uncertainty.
Have you ever felt completely lost, like you just don't have the answers to anything? That's exactly what Die Toten Hosen are singing about in "Keine Ahnung" [No Idea]. The singer is admitting they have absolutely no clue what to say or what to do, repeating "Keine Ahnung, was ich dir sagen soll / Keine Ahnung und keinen Plan" [No idea what I should tell you / No idea and no plan].
It's a really relatable feeling of being overwhelmed and confused. They question everything from good and evil to success and failure, even who makes the rules, saying "Frag mich nicht nach jedem Unterschied / Ob es Gut und ob es Böse gibt / Was Erfolg und was Versagen ist / Wer die Regeln für das Spiel bestimmt" [Don't ask me about every difference / If there is good and if there is evil / What success and what failure is / Who determines the rules for the game]. It's like they're seeing everything through a fog, unable to even understand their own thoughts, confessing "Ich kann selber nur noch Nebel sehn / Kann mein eigenes Wort nicht mehr verstehn" [I can only see fog myself / Can no longer understand my own word]. It's a wonderfully blunt and honest look at feeling utterly clueless, even wondering if they're just "zu dumm" [too dumb].