Top Definition
Slang Name, no offence to any dude who might actually have this name -- I know of no Jack Armstrong. A dude who Jacks off so much that he has developed huge forearms as a result.
I think Popeye is a Jack Armstrong. Look at his forearms. He is a sailor and his girlfriend is OLIVE OIL. Together they found SWEET PEA.
by Brutus & Bluto Blockhead May 29, 2006

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While it may seem like a slang name, and very well might be to some, Jack Armstrong is also a name of high rank.

Jack Armstrongs are very handsome, caring, and intelligent men.

They give women the shivers and are the subject of day dreams.

Jack Armstrongs are forgiving, intellectual, and are quite possible the most dreamy of men.
Want to know what is more romantic than The Notebook?

Jack Armstrong is.
by SandyDunes November 02, 2014

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