There’s a “bonus track” of sorts on the early-90s Innocence is Bliss demo by Swedish death metal band Leukemia. It doesn’t appear in the track listing on the cover, but I’ve seen a site or two list it as Booze and Don’t Loose (misspelling theirs, not mine). I’ve always been curious about its origins.
The lyrics are very deep and serious, as you would expect from a death metal band:
As you suspect, the lyrics are in Swedish. First verse:
Translated this means
They then continue for several verses, counting down the number of humps on the poor camel’s back. The final verse where Kalle has no humps ends with “För Kalle Kamel är en hest”, meaning “For Kalle the Camel is a horse”.
The song is a children’s song, usually sung loudly and badly from the back seat of a car on a long trip, the initial number of humps may vary. In other words, it is a variant of “100 bottles of beer on the wall”.