Definition
Physically unfit.
Opposite In Meaning
How People Actually Use It
In Muscle Cars and Hot Rods...accelerating so powerfully, the back tires lose traction, causing the car to go sideways or even spin around... (out of shape.)
"I was in my '66 4-4-2 when this Rice Burner wanted to go for Pinks. I hit it but went out of shape. ---------- From Little Deuce Coupe by Jan and Dean: And comin' off the line when the light turns green Well she blows 'em outta the water like you never seen I get pushed out of shape and it's hard to steer When I get rubber in all four gears"
Source: Urban Dictionary