Dewey

A person who will constantly tell you to get serious, and one who uses 'serious' in everyday language.

The Dewey of the class said to his immature classmates: "Seriously guys, seriously."

Isaac

Noun (m.): a person who not only finds and makes, but also relates, to 4chan green text memes.

“Isaac, stop, this is getting a little too real.”
“It is real.”

Siaran

A woman who looks more like a male monkey rather than a teenaged female.

"Look, it's Siaran" *monkey noises*