A type of an engine configuration; there are four cylinders which are arranged in a flat opposing configuration. They're found in many different Subaru models (The Boxer Engine) and also found in classic VW Beetles.
Everyone panics & hides in their houses when it's snowing out, but not me, my world is flat; I grab my keys & head out to play in my flat four (4 banger)!
by Thorka April 7, 2016
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to play soccer having the defence arranged with four players in a straight line
"get back in line Ferdinand" shouted Fergie. "we're playing a flat back four"
by theWestHamfan November 5, 2003
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For pizza delivery drivers - when invited into a house for recreational activities, this is the code used to let their manager know they won't be back as soon as expected.
Hey boss, I'm gonna be late for the next run. I've got four flat tires.

Alright - just make sure you use protection.
by newsedition November 14, 2013
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James and I are down like four flat tires.
by hogan468 May 23, 2006
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Mike says: Hey are you down to go to the movie tonight.

Rashad says: I'm down like four flat tires on a dump truck.
by Larry Scott December 10, 2007
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