4:20 Flashback: Don’t you dare, Bruce

420 Flashback 6-11-19
The singer-songwriter used this made up word as a place marker during the recording session. There was a break in vocals so he shouted out the word, which means “greeting” in German. In the final mix down the German engineer left the word and thus was born another misheard lyric. Name the song and artist and either the word or misheard word.
Answer: “Don’t Bring Me Down” Jeff Lynn’s ELO
The actual word – Groose or gruss in German
The misheard word – Bruce​