1: When someone fails, and "fail" is too harsh of a word, you can use failbug instead.
2: If someone fails but in a cute way and/or is cute/adorable.
Girlfriend: I just slipped and fell on ice :(
Boyfriend: Aww its okay my little failbug, i still love you.
Girlfriend: hehe thanks, but you are the failbug in this situation :D
when someone fails but do so in a cute way or/and are cute.
Girlfriend:Ahh Kaja just broke my phone :c
Boyfriend: Aww, you are a failbug Veronika :)
girlfriend: *slap* >:D