Fear of Felix (FOF)
A phobia of Felix. Anyone within a certain radius of Felix who suffers from FOF may experience severe anxiety etc. Alternatively, FOF can also be used as an acronym meaning "Fuck off Felix"
"No sorry, I cant play Ludo with you, I have Fear of Felix (FOF)"
Felix: "Wanna hang out today?"
Kitty: "FOF"
Felix: "Wanna hang out today?"
Kitty: "FOF"