There is a species of thought which swallows its own tail and annihilates itself from memory.
I cannot provide examples.
@evan Antimemes, huh?

@susabh Almost certainly one of the inspirations for antimeme fiction.

Sometimes the answer to a question renders the question so profoundly irrelevant as to warrant a prompt synaptic power-washing. I think I encounter these a lot during engineering work but that is largely based on how often I find myself blinking in momentary disorientation.