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1.
an ageing, rusty volkswagen also known as a vdub. some people in the vdub scene got into the idea of rusty old bangers with a mint floorpan and a beefy raceing engine. they are not all race cars and some are just for show and are always full of charm and personality.

rat look vdub club - rat twats
rat look dubs need rusty accessories, faded paint, slammed to the ground and noisey exhaust and got to be a dub - mainly aircooled but a few nasty watercooled ones are rattwats ;)
by wolfsberg rattwat phd February 14, 2010
 
2.
the look you give someone when they say something stupid.
jim said something stupid so we all rat looked in his face
by zekecalamari March 31, 2010