Top Definition
Adjective:

Very Very Smart. When the brain muscle is so jacked, you are unbeliveably Smart.

Modification of the Word Jacked, meaning very muscular or strong.
Person 1: Dude, I cannot Get this Question, its Redonk
Person 2: Bro, you just have to use the Binomial Expansion
Person 1: Holy Shit dude, your fucking Brain Jacked
by newom123 September 20, 2009

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when you have a repeating song or phrase that has taken control of your brain
i've been brainjacked by soldier boy
by nicholas barker March 05, 2008

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