Created mine on feddit.de to get the german equivalent of Catastrophe as a username. And also because I live in Germany
German "Catastrophe" is "Katastrophe". "Katzastrophe" is "Katze"+"Katastrophe", which in english would be "cat" + "catastrophe"... oh.
To potential new users, also consider https://discuss.tchncs.de/ as Feddit gets hit really hard currently