A man or boy who thinks he is so smart but is really a big nerd who knows nearly nothing. He is usually made fun of because he loves space movies, war, chess, and is usually a republican. You can point them out of a crowd because they will be the ones in line to get a "Mr. Know-it-all" shirt.
"Hey did you see that guy in the Mr. Know-it-all shirt?"
"No, where is he?"
"He is right there."
"Oh my gosh! He is such a nerd!"
"Yeah, what a giglet! Hah hah hah!"
by Mia Lance McCruster February 19, 2008

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Top Definition
Large quantities of something.
Opposite of a niblet
A giglet of stuff
by 04step February 27, 2011

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).

Buy the t-shirt