Top definition
the act of manipulating yourself through your pocket while on a bus or train or public transporation, or at a public park or street, while looking at an attractive female.
Neal was Casper Jacking to the hot blonde on the MBTA the other day.
by joeswedding October 28, 2011
Mug icon

The Urban Dictionary T-Shirt

Soft and offensive. Just like you.

Buy the shirt