Turtle

A person who has a defensive and protective façade and shell but a cute, sensitive inside.

Similar to watermelons.

I am a turtle. You think I'm tough but I cry alone a lot.

Quail

Quail is a nickname for those who act like idiots and are overall birds. Those who are labeled Quails often attribute the hair as their prized possession, just don’t mess with it.

Friend 1: Hey is that (random name)?
Friend 2: You can call him that but I’d prefer calling him Quail.