Well, I have heard the term since at least my adolescence, and I never quite knew the definition. But according to the urban dictionary, which sports 136 related definitions and synonyms. Ladies with thunder thighs can also have “piano legs”, or they can sport an “ocean of butter”, or whatnot. Basically, any woman buy cheap tramadol 50mg whose thighs range from Amazonian (substantial, but toned and still sexy) to just plain enormous can be said to have “thunder thighs”. Here is a photo gallery. Click on each one for an enlargement.