I would go and see the "Petronas Towers" which is one of the world largest man-made structures standing at 88 stories high and just over 250m. It is an iconic Malaysian landmark situated in Kuala Lumpur.
I would eat Nasi Lemak which is the national dish of Malaysia. It consists of rice cooked in coconut milk, served with meat and vegetables. Yummy!!
I would head over to watch a game of Sepak Takraw which is the national sport of Malaysia. It is a lot like volleyball except you can't use you hands...you must use your feet to make contact with the ball.