(rims, that is)
A random reference to the Beverly Hillbilles theme (“oil, that is”, “Hills, that is”).
The Beverly Hillbillies went from rags to riches just like Jay would years later. Jay “struck oil” with his radio friendly songs and attained the same “swimming pools and movie stars” lifestyle that the Clampetts did.
The rims comparison might entail that his mind is working faster than it looks, always thinking forward
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