'''Basic Trope''': A character who is so stupid it's unclear how they've managed to survive until now.
* '''Straight''': Bob's stupidity is of such baffling magnitude that it's unclear how he even functions.
* '''Exaggerated''': TooDumbToLive.
* '''Downplayed''': {{Cloud Cuckoolander}}... That being, an outlandish character that might mistaken as foolish by common folks, but he/she's actually rather functional.
* '''Justified''': Bob suffers from a brain disorder that severely restricts his mental development.
* '''Inverted''':
** Bob is a TVGenius who is more competent than the rest of the cast put together.
** Bob is TheSmartGuy and more intelligent than nearly everybody else in the series.
* '''Subverted''': Bob's revealed to have been the BigBad pulling strings from behind the scenes the whole time while [[ObfuscatingStupidity putting up an idiotic facade to avoid suspicion]].
* '''Double Subverted''': Even after being revealed as the BigBad, Bob doesn't display any signs of anything beyond the most basic cognitive functions.
* '''Parodied''':
** Bob's brain can be completely removed without any noticeable effect.
** An intelligence-eating PuppeteerParasite locks onto his head, and goes gray over the course of the episode. it finally falls off, and the COD is "Malnutrition. Poor thing starved to death."
** Bob tries to think. [[YourHeadASplode His head explodes.]]
* '''Zig-Zagged''': Sometimes Bob is presented as stupid, sometimes of average intelligence, and sometimes a genius.
* '''Averted''': Bob's stupid, but still vaguely capable of carrying out normal human activities.
* '''Enforced''': "We need [[StrawLoser a character]] who makes even the stupidest characters look smart by comparison."
* '''Lampshaded''': "Bob isn't the brightest crayon in the box."
* '''Invoked''': Bob stands under a coconut tree and a very large coconut lands on his head.
* '''Exploited''': ???
* '''Defied''': Bob keeps his smarts up any way he can.
* '''Discussed''': ???
* '''Conversed''': ???
* '''Deconstructed''':
** Seeing that Bob has absolutely no concept of morality or consequences and that nobody would ever suspect him of anything, ManipulativeBitch Alice convinces Bob to play a "game" with his friends involving a shotgun. Bob then spends the rest of his life in a mental hospital, with no idea why his friends won't ever come back.
** This actually happened to Hod in NorseMythology, only with [[NoodleImplements mistletoe]].
* '''Reconstructed''': To prevent him from being manipulated into harming anyone (including himself), Bob is always accompanied by his guardian/attendant Carol. Carol lampshades all the bizarre stuff Bob does and says, and - due to being constantly by his side - probably has a minor ButtMonkey status.
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%% Optional items, added after Conversed, at your discretion:
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%%* '''Implied''': ???
%%* '''Plotted A Good Waste''': ???
%%* '''Played For Laughs''': ???
%%* '''Played For Drama''': ???