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1.
The ass that a nurse gets from sitting in a chair for 12 hours and wearing loose fitting scrubs with elastic waistbands that fail to indicate you are slowly gaining weight. The key features are the side to side swaying and inner thigh swishing that occurs as they walk down the hall.
Guy #1: Hey man, check out that ass over there! Just how I like it.

Guy #2: She's got quite the nurse ass.
by TFB Nurse2 October 01, 2012