I know Linux; Java, Python, C++; math, physics; piano; Swedish, English, German
In case you want to know how I made my avatar, check out my GitHub repo :)
Q&A for professional and enthusiast programmers
Q&A for computer enthusiasts and power users
Q&A for linguists, etymologists, and serious English language enthusiasts
Q&A for users of Linux, FreeBSD and other Un*x-like operating systems.
Q&A for Ubuntu users and developers
Q&A for people studying math at any level and professionals in related fields