The full name of this pattern is
MONGOLIAN-SHAPE SHAMAN HAT aka GNOME CONDOM :)

Rather quick and simple.

You need app. 50 g of yarn (aran weight), i.e. 100 yards or 90 meters.

Why to make this hat?
I say: For me, wearing funny hat is the only way how to look funny and stupid intentionally.

Whatever I wear on my head, anytime, I look like an idiot or like some cleaning lady. On the street, at the University, at work … That´s the reason I am on my way creating funny hats. Tram drivers and bus drives hail me, smiling at me.
But frankly - I wear them rarely, I am usually hatless, hoping I look decently intelligent.