v. To take an unnecessarily massive dose of a drug, either intentionally, by misunderstanding the correct dose, or by accident.
Don't quaid the aspirin like that. 100 can't be good for you.
by rousedgonzo March 24, 2008
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(adjective) referring to a man who is acting crazy, paranoid and possibly violent; crazy, insane, psycho, postal, Evi Quaid
He thought she cheated on him, and then he went all Randy Quaid on her.
by sere450 December 24, 2010
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(adjective) referring to a woman who is acting crazy, paranoid and possibly violent
She found out he cheated on her, and then she got all Evi Quaid on his ass.
by geniusburns December 24, 2010
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An event where a man in his 50s purposely leaves an additional button on his shirt undone to impress younger women in their 40s.
45 year-old man: Hey man. Just so you know, there will be plenty of single women at this Napa Valley horseback wine tour, but I think they all are at least ten years younger than you. Think you can swing that?

58 year-old man: Don't worry about me. Just let me pop this button right here . . . And there you have it, the perfect Dennis Quaid.

43 year-old woman: (passing by) Looking sharp pilgrim. Let's ditch this wine tasting and watch "Something To Talk About."
by mintek September 11, 2012
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1.The summary of the movie Vantage Point
2.To laugh in the face of death.
Person 1: Hey how was the movie Vantage Point?
Person 2: It was DENNIS QUAID!
by TNSLPPTSO March 28, 2008
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Dennis Quaid smile in any movie...it is his signature in most films and is most apparent in The Day After Tomorrow.
"Dude, do you want to watch The Day After Tomorrow??"
"Nah, just the end of it"
"Why, what happens??"
"The fucking Quaid Smile"
by Saint and Bonneventure June 20, 2005
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