We say things silly in this family. Change the vowels occasionally. Drop a consonant here or there. I used to have to warn the kiddo not to do that at school. Didn’t want him to draw any ridicule. Here, I think one of us was messing around with “super good”. Naturally.
Sopper Gub is a cover band that only sings in German. I hope that doesn’t mean anything bad in German. Perhaps I should look it up.