Top definition
Very muscualr calves on a man or woman, usually unproportional with the rest of the body.
Wow! Look at his thunder calves! He must work them out 24/7!
by Setter02 June 09, 2011
Mug icon

The Urban Dictionary Mug

One side has the word, one side has the definition. Microwave and dishwasher safe. Lotsa space for your liquids.

Buy the mug