CONUNDRUM

conundrum. Conundrum, n. a low jest or conceit

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Co‐nun″drum (?), n. [] 1. 1. A kind of riddle based upon some fanciful or fantastic resemblance between things quite unlike; a puzzling question, of which the answer is or involves a pun.
Or pun ambiguous, or conundrum quaint. J. Philips. 2. 2. A question to which only a conjectural answer can be made.
Do you think life is long enough to let me speculate on conundrums like that? W. Black.