cognitive osmosis: The process, according to rumor, by which farspeech or other telepathic or techlepathic contact, especially the forms based in the exchange of neural gestalts, with the stupid causes one, oneself, to become less intelligent.
(Curiously, none of these stories ever suggests that this process makes the stupid themselves more intelligent.)
While having no basis whatsoever in sophontology, noetics, cerebroergetics, neuroscience, or indeed anything else but the unpleasant psychic odor of ill-formed thoughtforms, it remains an occasional phobia, a common urban legend, and a popular insult among everyone who has ever felt the urge to demand to know why they are surrounded by these incompetent fools.
– A Star Traveler’s Dictionary
“I feel stupid, and contagious”
More like that blast, I think it was from Fight Club:
“That was the f-ing stupidest thing I have ever heard, and all of us here are dumber for having heard it!”