An utterly stupid, silly, irritating, or despicable person. Can be used to refer to someone who breaks social conventions, someone who bugs you, or affectionately to name some crazy, fun-loving fool. Use in place of the word fool to indicate sass and fun. Example: Nekobus is a foolio for breakdancing. OR Did you see that foolio make a left-hand turn from the right-hand lane?
FOOLIO
Meaning of FOOLIO in English
Slang English vocab. Английский сленговый словарь. 2012