To get a better quality product or more quantity of that product for the regular price, particularly when you are at a fast food restaurant or when requesting sexual deeds from prostitutes.

A medical procedure which will—if and when it becomes reality—allow patients to modify and logically upgrade their genes to eliminate certain genetic problems, diseases, increase their intelligence, physical height; change the color of their hair, eyes, skin; increase or decrease the size of certain body part(s); and bring about other specific changes.

When something is changed and called better but is really made worse and less user-friendly; a downgrade. Usually irreversable.

to upgrade the ghetto

A phone call made or received, usually via wireless phone, which becomes heated and dramatic, eventually causing one of the callers to violently throw their handset and causing it irreversible damage making it necessary to replace the device with the latest available model.

A type of errand characterised by upgrading, usually in the context of technology.

The action taken by attendees at Philadelphia sports team events whereby the attendee moves from inexpensive seats located high in the venue, to much pricier tickets located closer to the field, typically involving several intermediate stops en route. When viewed from above, the path taken by said attendee would mimick the movements of the Plinko chip - side-to-side, yet still descending - used in the game "Plinko" on the popular, long-running American game show "The Price is Right."