These are what we call the 'YMMV items.' Things that some people find in this work. We call them 'your mileage might vary' because not everyone sees these things in the same way. This starts discussions in the trope lists, a thing we don't want. Please use the discussion page if you'd like to discuss any of these items.
YMMV: Oedipus The King
Award Snub - This play is the most famous of all of Greek tragedy. When it was first performed, it got second place at the city Dionysia competition.
Upon the revelation that Oedipus is her son, Iocaste immediately leaves the room. A servant walks in shortly afterward to report that the queen has committed suicide. You may or may not find the abruptness of all this hilarious.
An earlier scene also has Tiresias giving his signature warning to Oedipus while falling down and flopping around on the ground as though spontaneously getting heart attacks. The Chorus has to regularly push him back up, almost to the point of playing catch with him, and the fact that he's been made to look like some tremendous ghostly bird does not help.
Nightmare Fuel - There's a video adaptation out there featuring every actor wearing a gigantic mask with terrifyingly huge, black eyes. Ancient Greek theater was actually performed this way, though.
That's the 1957 version, by Tyrone Guthrie, which nowadays is pretty rare and usually held at libraries, but most of it can be viewed at Mgoon.
Tear Jerker - It's already awfully sad seeing everything go to pot for Oedipus because of Fate, but perhaps the worst part is when he has to explain to his daughters how they will be viewed as disgusting aberrations all because of him.
Values Dissonance - Quite a bit. Mainly: To an ancient Greek watching this play, Oedipus would've deserved what was coming to him because of his pride. Nowadays, it just seems kinda mean spirited. There's also the fact that infanticide by exposure was actually common practice in ancient Greece.