When the reason behind your laughter is a mystery...

This may lead to the conception of Lolomancy being another school in magic that deals with everything lol and rofl.
Basically, granting its practitioners, the Lolomancers, a huge arsenal of spells from roflblasting a person to conjuring lolocausts, lollercoasters or entities like lollerfish, lollypants, roflcoptermobile, roflsaurus, roflberry pwncakes, ...