I now lay the following CONUNDRUM
at your feet. Which size?
The Big Bang Theory Season 2, Episode 11
But returning to your key CONUNDRUM,
you should call a locksmith.
The Big Bang Theory Season 2, Episode 3
so you can see the CONUNDRUM.
Game of Thrones Season 6, Episode 8
Ethical CONUNDRUM avoided.
The Big Bang Theory Season 6, Episode 6