Top Definition
1. Spending time without purpose.

2. Getting involved with, interfering, manipulating or attempting to control another's emotional state of mind. Usually has a negative connotation.

3. One who is unqualified attempting to use, inspect, adjust, assemble, disassemble or generally fool or mess around with something or someone.
"What have you been up to?"
"Just jacking around."

"He has a reputation for jacking around with girls’ minds."

"I feel like you've just been jacking around with me."

"Don't be jacking around with your Dad's computer, or he'll have your ass when he gets home."

"My husband was jacking around with the plumbing to fix that dripping faucet, and now we can't flush the toilets if someone is doing laundry."

by drivers February 03, 2006

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Fooling around, messing with buddies or other people in a completely dumb way.
Hey!, stop jacking-around.
by Legs Mahoney February 12, 2009

The Urban Dictionary Mug

Lotsa space for your liquids.

Buy the mug

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