A large customized SUV. They are a stylized version of the security vehicles, used for safely transporting diplomats and officials in dangerous third world countries.
Check out Rob and Big's Urban Assault Vehicle!
by Cool Moldy September 2, 2010
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Commonly Called a MAV.
Mormon women drive them around all day long, to cart their litter of children around to and fro.
A tipical MAV is a Hummer, Ford Excursion, Ford Explorer, Ford*, Nissan Titan, Suburban, Denali. Any grosly oversized vehicle (commonly called a SUV)
Usually gets less than ten miles per gallon when fully loaded with children.
To spot a MAV, simple look at the driver. Is she a woman? Is her hair done up, is she wearing makeup? Does she have those fucking half see-through shiny silver glasses? Is you said yes to these, you have successfuly spotted a MAV.

A MAV may come equipped with some of the folowing items, this is how you can tell its being driven by one hip-ass mom:
Rims
Spinners
Tinted Windows
Spoilers
After market Xenon lights

Note: 99% of the time trucks are NOT MAV's, as they are usually driven by men and cannot hold many children. Crew cabs are an exception!
These damn women driving their MAVs, get off your fucking cell phone so you dont fucking hit me!

Damn, check out the milf in the MAV!
by TTM September 21, 2004
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A motorcycle fitted out with tall suspension, knobby tires, handguards, and loud muffler; designed for maneuverability and lanesplitting, it can find parking anywhere.
That DR650 makes a nice urban assault vehicle.
by Timberwoof April 17, 2003
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Any Type of Vehicle with Fred Durst, DMX, Redman and Methodman driving in it singing as loud as they can.
Kumar: Dude there's a fucking Rollin' (Urban Assault Vehicle) down the block we should check it out.

Harold: I don't have time man, I've got too much work to take care of due in the office tomorrow.
by neard2000 January 4, 2010
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When one decides to break open a congregation of people by barging a friend through them, causing a ruckus.
It was so funny, we caused the fattest ruckus, I just did a Mobile Assault Vehicle on those cunts
by George Bisbikis September 13, 2004
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Slang to describe the trendy scooters commonly seen outside coffee shops.
Jenny's got a new little coffee shop assault vehicle, I see her riding it all over town!
by James Weyand October 25, 2007
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