Top definition
Whenever a male intentionally steps close to a female who is swinging her arms while walking just to get a sexual thrill out of "accidentally" being hit in the balls.
Campus is a great place for the horny male student to go ballking as plenty of chicks swing their arms as they stroll.
by acrestare February 26, 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