Top Definition
Verb
-to hijack someone's game of TriviaCrack and choose the wrong answer
John: Hey! I know that one.
*Takes Ken's phone and answers "50" to the question "How many stars were on the original American flag?" Gets the question wrong.*
Ken: Hey why'd you crackjack me man!?!
by Southhighspartan December 21, 2014

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(Crr-Ack-Ja-Aack)
Noun.
Refers to someone rediculously immature,stupid,or just plain out retarted.
Dude we went to chruch with my girlfriend and my brother was acting like a total "crackJack",I was totally ruined.
by mxxx July 11, 2008

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Soft and offensive. Just like you.

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a word meaning okay;also used for crackhead
maya:do you wanna go to the mall?
anna:crackjack!
by maya April 04, 2003

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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).

Buy the t-shirt