The short period of time in between a razz and a relationship. It is where the two individuals are basically going out but have not yet made it official.
Campbell: "Lilian, how's Macky Tim going?"
Lilian: " He's fine, thanks for asking"
Paige: "Is that a zoom?"
Campbell: "Zoom confirmed!"
Pills, Hard Drugs etc Doing a "Zoom" ie getting incredibly fucked up on drugs, taking a copoius amount of pills to the point where you think you are faster than the flash