In over your head; physically or otherwise.

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

The original definition:
" According to The Oregonian, a vertical slit shaved off the eyebrow is a gang symbol indicating membership. It is sometimes referred to as "carved." ... According to The Oregonian's source, a shaved line in the eyebrow is meant to impress rather than to intimidate. "

it is something that you do with your eyebrow you point it up and act like you mad

When a person takes a big load of facial and it is then let dry to remove like wax; hence: man she took two eyebrow waxing in one day!!!

An amazing transformers figures reviewer

Eyebrows that are so fucking crazy looking that everytime you see them you realize that you aren't actually the ugliest person on Earth. Like seriously what the hell it looks like normal eyebrows but upside-down.