If you want to say the f word uncensored without any diacritics in there (like the ū you just used) you can google "Cyrillic es" and get the lowercase version of that character, which is basically the "s" sound in Russian, Ukrainian, and Belarusian but it's spelled literally identically as the Latin script letter "c" used in this language and other European languages (since the Cyrillic script is partially derived from the Latin script). (This is also called a homoglyph). Then copy the Cyrillic es into the f-word, but replace the normal Latin "c" that you typed with that Cyrillic es. Imgflip won't censor it, and it will literally still look identical to the f-word.