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.
The name of a mans life that consists of a chain of fuck ups.
“Fuck me Jason, look at him! His name has to be Casper Jack! What a fuck up.”