Top Definition
To mess or fool with. Also used in context of keeping company with.
"To jack around with electrical wires is risky."

"I prefer to not jack around with all that drama - it's just asking for trouble."
by drivers January 27, 2006
2 more definitions
To manipulate figures in an effort to provide clarity, but more often than not, it results in confusion.
"You could just pull the numbers, dump them in Excel and then jack around with 'em until you get the output you want."
by Fye Nance September 18, 2008
it means you don't literally jack off all day but you might as well
because there's nothing better to do
I only have one class tomorrow, so I'm probably just going to jack around all day.
by Jerrrrrrrr September 17, 2009

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