When you shave off your eyebrows during a 2007 britney breakdown and now you're desperately drawing them on with sharpie.

Moving your eyebrows in a squiggly line

he who hails form the "Land Of New", carrying with him only the fur (in some cases pubes) of an elk, wallaby and/or GRIZZLY BEAR, neatly and strategically fasten to his lower forehead in gratuitous quantities.

hides under a glow in the dark Led Zeppelin t-shirt, thus making him an easy target for eyebrow harvesters. therefore there is only one known "eyebrow master" living among us in the modern world.

When a female is filling in/drawing on her eyebrows, and after both are finished, she comes to the realization that they aren't quite symmetrical; therefore resulting in having to undergo 'eyebrow repair' without harming adjacent makeup.

If she has thick eyebrows, theres a better than average chance she has a thick bush.

In over your head; physically or otherwise.

If you claim ‘eyebrows’ on a fact but are then proved wrong your eyebrows get shaved off.