Top Definition
This phrase is a notorious slogan found on stickers and T-shirts, used by people who oppose the policies of George W. Bush. The sticker also features a picture of W. The slogan is an anthem of resistance and refusal to accept Bush as America's legitimate President. It became more commonplace after the Iraq war started.
At the parking lot of a Media Play store I saw a purple car with a Not My President sticker on the rear.
by I Saw U2 Live Twice September 18, 2007
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As the election on Tuesday came to an end. The system chose the Donald as elect-president. The people chose Hillary. Trump protesters took to the streets to let everyone know, that he will not be their president.

Everyone else: NOT MY PRESIDENT

Ex2) Chloe: omg, these stupid Hillary supporters need to understand the we the people elected him. Donald is so hot
Jasmine: you mean, YOU racists bigots and the system elected him. I voted Hillary she won, therefore he is NOT MY PRESIDENT.
by Lilwiggle34 November 11, 2016
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An utterly retarded term used by people with mental illness, if used in the United States of America people who say this term should be viewed as retarded and treated as if.
Person raised stupidly:Trump is Not My President
Person Raised Correctly: You are mentally ill.
by LinkinZeke February 21, 2017
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