First I would go around Doha and scare the living sh!t out of the people who are greedy,selfish,and the cheating people.
After that, I'll go to a scary movie and tip people's popcorn and Bebsi, whisper in their ears, pull their hair, etc., just to freak them out!
Of course I'd look in the mirror, get freaked out, throw bricks at people I don't like, punch DaRuDe in the face (assuming I could find him), run around town, picking things up and telling people that ghosts in fact do exist and Dracula isn't a fake. When the sun raising i would go sit with a gynaecologist all day.