1. Your gruff mentor litters his/her bedroom with beer cans.
2. You eat bread while running late to school.
3. Your nose bleeds every time you're turned on.
4. You have a huge appetite + comically bad table manners. Because you're a badass.
(*Applies mostly for shounen/fighting anime.)
5. You cry into your own ludicrous boobs.
6. You break Newtonian physics with your boobs.
7. Everyone can tell you're a secret sociopath because you're wearing/adjusting your glasses.
8. When you have an epiphany, the camera cuts to a feather drifting onto a still, dark water surface.
Senpai doesn't notice you. A single tear rolls down your cheeks. Baka, you mutter to yourself.
9. You're always seated next to the classroom window. Especially if you're the rebel protagonist, or the mysterious transfer student/love interest.
10. You slip and faceplant into your love interests's boobs all the time. Especially at hot springs.
11. You sweat a giant single bead of sweat when you're confused or surprised.
(↓Seriously though, that hat.)