How about "Pockmark!... Freshwater swabs!... Bully!.." or "Amoeba! Bashi-bazouks! Chowderheads! Certified Diplodocuses! Nyctalop! Ectoplasm!"?

I was so disappointed when I tried reading tintin in other languages and found the dear captain was straight up using slurs in those. I wonder whether the english language ones have been edited over the years to remove that sort of thing

"Your mother was a hamster and your father smelt of elderberries!"