The phrase you state at the end of an argument or statement to create an illusion of credibility when in reality you don't actually know if what you stated is true but still have personal trust in your knowledge. By stating "look it up" you are actually hoping the person won't look it up and just believe you on the spot.
"Vaccinations are evil. Look it up"
"Humans all deserve to die, we are filthy viruses, look it up"
"I am always right, look it up"
"Humans all deserve to die, we are filthy viruses, look it up"
"I am always right, look it up"
by 1sagain June 14, 2017
Get the Look it upmug. Me: I'm telling you, Patrick Duffy played Spiderman.
You: Umm. No. He did not.
Me: Look it up.
You: Sigh..
You: Umm. No. He did not.
Me: Look it up.
You: Sigh..
by Bonch Nifkin July 21, 2011
Get the Look it upmug. A completely bitchy thing to say when asked a simple question. A great way to set a horrible example for children by acting immature and adding fuel to the fire.
TV Interviewer: Madonna, what do you think about Lady GaGa's song 'Born This Way' reportedly sounding a tiny bit like 'Express Yourself'?
Madonna: She seems reductive.
TV Interviewer: What's reductive?
Madonna: Look it up. *sips tea*
Madonna: She seems reductive.
TV Interviewer: What's reductive?
Madonna: Look it up. *sips tea*
by cmoneyrules April 17, 2012
Get the Look it upmug. by njgshqehgo[gho October 10, 2018
Get the Look it upmug. by Mallory The Great August 26, 2008
Get the Look it upmug. by Rage April 24, 2003
Get the Look up boxmug.