A sphinx that genuinely doesn’t know the answers to its riddles and doesn’t believe you when you get them right.
A pair of talking doors. One of them makes fun of you. The other silently judges.
A pressure trap that can be disabled with a written document certifying one’s final payment against student debt.
Entire treasure has been invested, has been converted to ‘the roof of your neighbor’s house,’ etc. Go steal a roof, scum.