404 // n. [from the HTTP error "file not found on server"] Extended to humans to convey that the subject has no idea or no clue -

404 // n.

[from the HTTP error "file not found on
server"] Extended to humans to convey that the subject has no
idea or no clue - sapience not found. May be used reflexively;
"Uh, I'm 404ing" means "I'm drawing a blank".

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