CHICKEN LEGS AND THUNDER THIGHS.My wife once described me as having "chicken legs" -- thin/spindly. The observation was and remains more or less apt.
Tennis-playing women might be described as having "thunder thighs." Nothing derogatory from here ... just seems more or less apt. How would you like getting rapped upside-the-head with a Serena Williams thigh?!
"Not I!" said the chicken man.