To find information about slang words in Croatian language, please, click to the link https://sites.google.com/view/slang-words-croatia/main-page?authuser=0.
The list of slang words is available here: https://ssosza-my.sharepoint.com/:x:/g/personal/ivana_brstakova_ssosza_sk/ETniTvIGGAdGtvJjlLKQipABfID0yTEAiK2eHFy-fzLG1g?e=Y1sDLj
The second school from Croatia was led by a teacher, Vojislav. His students also created a website with information about the Croatian slang words. Here is the link to their page https://wakelet.com/wake/ZHTw24uXPoDry98H1sat0.
And here is the link to the slangs words, his students found.