Playing With / Sarcasm Failure

Basic Trope: A character who normally is a Deadpan Snarker or tells irreverent one-liners is struck speechless, either by the seriousness or the sheer idiocy of the situation.
  • Straight: Tim, a detective who has been quipping to black at dead bodies the whole series, remains silent when the body is a little kid, suffocated with a teddy bear.
  • Exaggerated: Tim breaks down crying.
  • Downplayed: Tim gives an Aside Glance, but can't go any further than that, and it's left to interpretation what the Aside Glance means.
  • Justified:
  • Inverted:
    • The normally-humorless Ted suddenly gets in a good zinger.
    • The utter bleakness of the situation freaks Tim out so badly that he becomes even more sarcastic and irreverent than usual. "Looks like playtime is over! I know, I'm just unbearable today."
  • Subverted: Tim suddenly says, "Heh, you know, I could joke about this, but it would be just too much to ...stand."
  • Double Subverted: Whereupon he starts weeping.
  • Parodied: Tim tries to get in a one-liner, only to be constantly interrupted by someone else doing it instead.
  • Zig Zagged: Sometimes Tim is speechless at particularly horrifying events, sometimes nothing escapes his wit. He just can't seem to find any consistency — which he himself remarks upon.
  • Averted: Tim delivers a one-liner as usual.
  • Enforced: The editors ruled "Dude, Not Funny!" on the proposed joke, so they took it out.
  • Lampshaded: "Tim? Are you actually speechless for once?"
  • Invoked: Tim is assigned a case that the higher-ups know he won't be amused by, just to get him to quit it with the sarcasm.
  • Exploited: Tim became a Deadpan Snarker just so that the others would be more affected by the times he couldn't crack a joke.
  • Defied: Tim is mortified by the dead child, but forces himself to keep up the caustic wit to maintain his reputation.
  • Discussed: "I don't think even Tim could possibly make a joke about this."
  • Conversed: "Watch, they're gonna make it clear the audience is supposed to be mortified by having Tim not even make a joke. Just you wait, it'll happen."
  • Deconstructed: Tim uses his sarcasm as a coping mechanism, and when he realizes that he's lost the one last barricade against the trauma to which he has been witness, he has a complete breakdown.
  • Reconstructed: After a little episode when he failed to make a quip, Tim realizes that hiding behind sarcasm isn't a healthy way of coping with his stress, and tries to learn a healthier method of dealing. That doesn't mean he won't still have a clever one-liner ready for when it's actually appropriate.
  • Played For Drama: The victim is a child. Tim doesn't joke because the situation is too tragic.
  • Played For Laughs: The victim turns out be a grown man who's died in a bizarre S&M accident involving the insertion of a cucumber too far up an orifice where whole cucumbers normally should not be inserted. Tim tries to get a joke off the ground but fails because the situation is too crazy even for him.
    • The Ditz says something so mindbogglingly stupid to Tim that all he can say is "I'm... not quite sure how to respond to that."

Not going back to Sarcasm Failure is a fantastic idea!

Oh... Oh my...