The term 'Zipping' can be used to describe the act of performing Zipestra- which is essentially using a zip on either a coat or your flies or something similar to create some sort of musical tune.
If you were to zip your coat up and down to the tune of "We Will Rock You", you would be 'zipping'.
Zipping or zipping-it-up is what one does when they are being a douche with no self confidence. The combination of this unconfident doucheyness will often result in having sex with girls well under ones pay grade, pissing off everyone in their immediate area, and constantly thinking the world is out to get you when it is really you just fucking yourself over. The consequences of this attitude often results in having no friends, getting written up at work, and constantly contemplating your own demise.
Dude 1: Hey man I really feel like the world is out to get me, I mean sure I made out with that one girl last night and was late for work, but I wanna know who told my wife and why would my boss not just let it go this time?
Dude 2: Shut up man you're bringing me down right now. You're really zipping-it-up.