Ha ha ha !
I laughed and laughed and laughed.
In 2ch, after seeing such a kind of things, we usually wrote "ﾊｹﾞｼｸ ﾜﾗﾀ"
It reads saying "Hageshiku Warata".
"Warata" is a slung of "Waratta", it is typical 2ch-style.
It is a past form of "Warau", laugh in Japanese.