An individual whom follows package delivery services around during the holiday's seeking out opportunities to steal boxes that are left in front of houses by the driver.
"Dude, me and Bob did a little UPStalking yesterday and nabbed a new PC thanks to the dork who left the box at a vacant house."
A fellow citizen that obeys the laws and respects the rules and guidelines put forth by society. This person is also very helpful and has good morals.
Dude 1: "Dude, you stopped chewing tobacco and drinking and driving?"
Dude 2: "Yeah man, I realized how it was harmful to my health and how I was putting others in risk."
Dude 1: "Wow dude! You've really turned into a genuine upstanding citizen!"
Dude 2: "Heeelllla upstanding!"