/ˈfaɪvˌhɛd/ noun
Definition: You had a forehead. That forehead got wrinkles, so you had some “work” done. Sadly, it wasn’t a great job. Now you have a “fivehead”.
Etymology
A numerical pun on the word “forehead.” If a standard brow is a “four-head,” one that has been pulled back or extended through “work” becomes a “five-head.” It implies that the surgical attempt to remove wrinkles has resulted in an expansive, artificial surface area that exceeds natural proportions.
Usage
Context: Used as a critical observation of cosmetic surgery outcomes that lack subtlety. It suggests that in the pursuit of youth, the individual has traded natural expression for an awkwardly prominent brow.
In a sentence: She went in to get rid of a few frown lines, but the surgeon pulled a bit too tight; now she’s sporting a permanent fivehead.