Top Definition
One of those moments where everything suddenly becomes clear, and the penny has droped.
"I had a huge penny dropper the other day, I was working on intrinsic semiconductors and it all suddenly made sense!"

Sue: "I finally get the off-side rule!"
Chris: "That's a huge penny dropper for you!"
by Chrue January 04, 2010

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.

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The Urban Dictionary Mug

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

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The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

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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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