Some type of complexity that requires sound, creative thinking to solve. Unless time is of the essence, don’t rush this answer.
Lacking clarity in the way you present something, or purposefully hiding your true motivations and feelings in a matter (e.g., “talking in riddles”).
A lesson in disguise. In many fables, riddles are used to teach the main characters something specific about themselves or life. Similarly in ancient Japan, priests used riddles as a way of teaching seekers spiritual truths.
Something or someone who tries your patience by presenting everything in seemingly incongruous or incomprehensible terms.