Top Definition
when maintaining a solid A average but getting a heavily weighted B ruins your whole GPA.
Maia: "so how were your final exams?"
Rachel: "ugh, I got killer B's on all of them, they were pretty hard"
Maia: "that sucks balls"
by youcookedyourfoot? November 30, 2009

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The name for someone named Peter Bishop, and is very scientific and gay.
Student "MR Bishop, what are you doing to that gerbil?"

killer B "Nothing student, Just giving it the old Two Dogs in a Bathtub."
by tony greco November 03, 2007

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

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A name for the Plan B pill(The early abortion pill)
"Do you have a condom?"
"No but i have the Killer B pill, so we're okay"
by Jocclark May 10, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

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The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

The Urban Dictionary Mug

Your favorite word on a white mug.

Create a mug

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the t-shirt

The Urban Dictionary T-Shirt

Smooth, soft, slim fit American Apparel shirt. Custom printed. 100% fine jersey cotton, except for heather grey (90% cotton).

Buy the t-shirt