not so bright a bulb

Someone who is very stupid or just ignorant, and can't comprehend the most basic things..

- 90% of the time this is all an act to piss off other people.

- Watch out for these people, they can be hard to spot sometimes, and at others, it's very easy.

Ex:

Joe: Oh yeah Avatar was a great movie!

*friend goes to see movie*

Billy: You son of a bitch! That was a chick flick designed to make women swoon. You're not so bright a bulb!

not so bright a bulb by KD42 March 14, 2011

Not the brightest bulb in the chandelier 

Someone slow, dimwitted or stupid - another way of saying "Not the sharpest knife in the drawer". Also, someone who stands out in a crowd as being particularly unintelligent.

Marisa: Why does Eric even bother talking in class - he has no idea what he's talking about.

Michael: What do you expect? I mean he's not the brightest bulb in the chandelier!

Not the brightest bulb in the chandelier by SpencerDuhm March 15, 2009

not the brightest lightbulb in the chandelier 

as defined by the reality TV show Forensic Mysteries on HLN, this a synonym phrase for "not the brightest person around"

boy 1) yo come to my backyard, i want to start a party by going out to weed

boy 2) are you an uptard, your dad, or mom will notice.

boy 1) nope my mom is not even home from work and my dad is not the brightest lightbulb in the chandelier, he will think we are trying to burn Cheetos on the barbecue or something.

not the brightest lightbulb in the chandelier by Uncle Dimma March 16, 2013

not the brightest bulb on the porch 

a nice way of refering to a person who is not smart or who does things that are ill-advised

See also: not the sharpest tool in the shed, a few bricks shy of a load, not playing with a full deck

Durwood: My uncle is not the brightest bulb on the porch.

Winthrop: Why do you say that?

Durwood: He saw a sign that said 'keep of the grass'... so flushed his stash o' hash down the drain.

Winthrop: Bloody 'ell!

not the brightest bulb on the porch by Hey-Johnny-Johnny June 11, 2006

not the brightest crayon in the box 

another term for not the sharpest tool in the shed implying that you are a total dumbass

well i guess we are not the brightest crayon in the box

not the brightest crayon in the box by Holly Matronic May 27, 2007

Not the brightest shelf on the knife 

One who is not the prime example of human intelligence; idiot

Bob: Did you see Lisa fall down those stairs?
Dan: Yeah, she totally tied her shoes together!
Bob: Wow, She's not the brightest shelf on the knife.

Not the brightest shelf on the knife by <name>insert<name/> September 1, 2007

Not the Brightest Bubble in the Bubble Patch 

A phrase explaining that someone's not the smartest person in the world in a manner that's only slightly degrading.

We'll she's definitely not the brightest bubble in the bubble patch

Not the Brightest Bubble in the Bubble Patch by Individualite August 6, 2010