How to annoy your parents (or anyone else you'd like):

Follow them everywhere they go in the house.
Howl like a wolf whenever they call you.
Pretend you suffer from short term memory loss.
Spin and get dizzy.
Run around the house holding a light bulb and scream "The sun!! IT'S DYING!!! HEEEEEEELP!!!!!" desperately.
Sing a song very loudly while you walk around only in your undies.
Say that wear clothes is against your beliefs.
Go into hysterics involuntarily.
Jump instead of walking.
Wake them up at 3 o'clock in the morning with a big smile in your face and then sing "Good morning, good morning!" with a girly happy voice.
Run in circles.
Keep saying you feel a weird disturbance in the Force every time you see them. Then accuse them of betraying the Jedi knights and joining the dark side.
Hold their hands and tell them with a frightened look "I see dead people".
Recite an entire movie 4 times.
Say you fought against yourself and lost. And keep insisting it wasn't fair.
Wear a shirt with the saying "I'm retarded and proud of it" wherever you go with them.
Say you are imitating your dog and follow it around the house.
Keep chewing your hair in front of them.
Make yourself a cockade and pretend to be an indian.
Try to find another way of drinking something from a glass.
While taking a shower, scream "I'm drowning! I'm drowning!" until you finish it. (If you don't have a bathtub, doing this becomes twice as annoying as it would normally be.)
Pretend to be a telephone.
Put your pants in your head and your shirt around your waist and say it's a new concept about fashion.
Demand your own private phone line.
Try to swim on the floor.
Keep jumping, trying to fly.
Create imaginary friends and talk to them all the time.
Eat things that are not edible. (But don't kill yourself, please.)
Pretend you are 734 years old.
Scream "Bullshit!" for everything they tell you.
Keep turning on and off the lights for 10 minutes. Then say “Ahhh... now I got it!”
Try to walk on the walls.
Eat an ice cream cone, put the cone in your forehead and say you are a happy little unicorn.
Keep knocking on their door the whole night.
Pull out someone's hair and scream "DNA!!"
Pretend you have multiple personalities.
Try to put your head inside of an aquarium.
Stay upside down inside your closet.
Chase an imaginary tail.
Glue your finger in your nose with Super Glue.
Talk to a pencil.
Slide instead of walking.

If in the end nothing of this work out, at least you'll have caught their attention. But be careful to not end up in a madhouse...