(noun)
1. Not at all a smart funny and sexy person.
2. Some of the least interesting people alive.
3. A creature that inflates the crest on it's head when threatened.
Joe: "Hey look, there's Aiden over there."
Harry: "Watch out, don't startle it or it might inflate."
Autumn is a badass. Anyone would be lucky to have her as a friend. She will fight for you, make sure you're always alright, and help you when you need it most. Even though she looks scary, she's sweet, kind, funny, smart, pretty, and amazing overall. If you scratch her back, she'll scratch yours (metaphor).
Girl 1: Where were you last night? What happened?
Girl 2: Me and Autumn accidentally got in a fight. We won though.