spoofball

One who acts, intended to deceive others by posing as a village idiot; tomfoolery.

A perfectly normal person, with a D.Arch. (Doctor of Architecture), logs onto the web signed in as his alter ego "Amoron16". Visits his favorite forum and replies to insert random topic:

Amoron16: Gawd, I want to fornicate... NOW! LAWL!

Random guy: Dude, you need help. Seriously WTF?

Amoron16: PLZ forgive me. :(

...

LAWL!

<Logs off for the evening>

Perfectly normal person: Damn, I'm such a spoofball...