1. To have sex with a wide (and often indiscriminate) selection of partners. 2. To have sex outside of a supposedly monogamous relationship. 3. To waste time, or to generally screw up a task.
(For 1): You're going to catch something really nasty if you keep fucking around with these sluts.

(For 2): Your boyfriend is so cool, I can't believe you fuck around behind his back.

(For 3): Get back to work, we don't have time to fuck around here!
by Evac156 February 9, 2005
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US Slang phr. 1. To mess with or to play around with. 2. To engaged in sexual intercourse with serveral partners at different times.
Don't fuck around with me or I'll kick your ass.

All you do is around with every man you see you whore.
by tnt3d October 22, 2004
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Not at all engaged in nothing productive. Though it may appear to an observer that the subject is doing nothing or thinly disguising his or her apparent idleness with misleading activity, the subject may be more open to the discovery of something new than if he/she was not fucking around.
Hence, fucking around may be a modest term for continuous searching, remaining open to any and all fresh input.
Fucking around may be experimentation in its noblest form.
"What are you doing?" (asked while doodling on the guitar)
"Oh, just fucking around." By such fucking around there may be a sudden new melody that comes to the one who doodles on the guitar.
by tim kibler July 24, 2006
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Used to express disappointment, disbelief, or general negative feelings in regards to a situation.

(Used often by people who reside in the N.E. MO. area, specifically in or around Kirksville, MO.)
Husband: "I got pulled over on my way home and got a ticket."
Wife: "Fuck around!"
by respect him May 11, 2015
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a term of disbelief. to ask for validation of a statement or situation.
"fuck around! you really gonna break up with that fine woman"?
"...yeah man, its just not workin out"
by queen jane January 15, 2009
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Cheating on someone, usually said in bitterness or anger.
Not just kissing, but more. See def 1 for 'fooling around'.
Oftentimes 'fucking around with' or fucking around on'.
for example:
"How dare you accuse me of fucking around on you!!"
or
"I knew she was fucking around on me with John."
by ajavudit September 1, 2009
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