I'm troubled because my dandruff is severe.

He is bad at math and thinks he is dumb.

Because he is bright, he was able to solve the problem immediately.

His bald head was reflecting the sunlight.

Mr. Yagashira is my best friend.

The glans penis, which is a part of the male genitalia, is very sensitive.

He suffered a minor contusion on his occiput.

This country is ruled by oligarchs.

The captain ordered a big turn around.

Polyarchy refers to a political system where many people share power.