Top Definition
When something (an environment or event) gets you so excited that you do something outrageous in reaction. Origin is possibly from the Flo Rida song of the same name.
"Look at you - first 50 degree day after winter and you aren't wearing a jacket - you don't know how to act..."
by charlesgriffingibson March 11, 2014
5 Words related to Don't know how to act

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