zipper effect

The chain reaction caused during the last 10-15 seconds of class when someone loudly zips their backpack, this in turn causes everyone around him to look up at the clock and immediately start packing.

Guy 1: Class was taking forever today, I had to resort to the zipper effect.

Guy 2: Works every time.

by mmalone July 13, 2009

zipper merge

A zipper merge happens when motorists use both lanes of traffic all the way to a defined merge area, and then alternate in "zipper" fashion into the open lane. By doing it this way, both lanes are used right up until the end, which advocates like New think is a more efficient use of road space.

1st Motorist: "Zipper merging is best for slow heavy traffic. If traffic is light, early merging is fine."
2nd Motorist: "Only problem with zipper merge are the idiots who will not let you merge in front of them so they pull up tight to the car in front of them. They do this even if you try to merge early. I typically will merge at the first available open space."

by humblepiece May 23, 2015

zipper

A practice in S&M/Bondage where a number of clothespins are pinched into the skin of the sub, and a cord is knotted on each. The clothespins are then removed using the cord either in a slow one-at-a-time "pluck" or all at once using a rip of the cord to maximize the effect at once...sometimes to coincide with orgasm.

"She trembled as she anticipated the Zipper's jolting shock to reality"

by SM_Data December 7, 2007

Zipper Muffin

When a girl's pants are so tight you can read her lips. Also known as Camel Toe and Beaver Floss

Man, did you see that girl's zipper muffin? I coulda swore it said something to me.

by Ryan March 13, 2005

zippered up

To be murdered due to an act of disrespect and placed in a coroner's bag.

If that punk bitch keeps fuckin around and don't pay me my money he's gonna get zippered up.

by Got it on the Low March 2, 2009

zipee doo

The design on the back pocket of a pair of blue jeans, usually unique and specific to individual clothing manufacturers.

I could tell by the fancy zipee doo on her jeans that she was out of my league

by trucksitting May 24, 2010

Zipper Bumping

male becomes erect enough that his penis is pressed against the zipper of his pants.

Yo Ming! you see those two asian school girls making out on the bus, got me straight up zipper bumping....ya digggggg?

by RidiculousIsHe February 27, 2015