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1.
dimples that everyone has on their lower back, just above the ass. There are two located very near the kidneys so they are appropriately named "kidney dimples".
Jeff has gained a lot of weight. He's starting to get kidney dimples.
by nate b December 30, 2006
 
2.
Kidney Dimples is a term used to describe someone who is in a state of arrogance and is oblivious to his or her own nonsense. The phrase routes back to 2006 when someone wrongly defined back dimples as kidney dimples and also stated that everyone had them when they are in fact genetic.
Larry went kidney dimples the other day when he started rambling on how he thought the actor who played Frances on Malcolm in the Middle was Neil Patrick Harris, even though we told him it wasn't true.
by WinifriedPaulletta November 03, 2013