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To do something fun/entertaining and/or exciting.
"Would you like to mix it up at the park today? We could bring a frisbee or a ball of sorts."
by Jimmy McKenna April 16, 2008
20 6
To add difference to anything you are doing.
"Today is soo boring, I am going to mix it up and do something different".
by Amanda Kipniak May 31, 2006
18 9