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#
butt-dyno
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A device which implements a human being's rear-end to report a vehicle's
performance
in
acceleration
or
engine
power.
My butt-dyno
says
it's
faster
!
by
Steve
October 21, 2003
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butt-dyno
mug.
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Get the butt-dynomug. Get the butt-dynomug. Get the butt-dynomug. Get the butt-dynomug.