When someone gets in the way of you flirting, making out, or having sex with a girl you're interested in. Essentially, the sapphic or wlw version of cock blocking.
We can't bringAshton on our date he's Cliterference in human form
The act of sneaking up on someone with a clipper (that is, one of those electric haircutting things) and shaving a portion of their hair, often making the one that was clipperized very angry and making everyone around laugh quite hilariously.
Bonus points are given for clipperizations near the front of the head or any other easily seen place. A victim of clipperization often must completely shave their head or otherwise make themselves not look insane.
There is a common protection against clipperization: the hat.