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bulb

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dim bulb

An unintelligent or slow-witted person. I explained this to you not once, but three times! Are you just a dim bulb, or what?

See also: bulb, dim

dim bulb

n. a dull person; a stupid person. George seems to be a dim bulb, but he’s a straight-A student.

See also: bulb, dim

light bulb

n. a pregnant woman. (Jocular. Refers to the shape of a pregnant woman.) Who’s the light bulb on the sofa?

See also: bulb, light