10 perfect ways to freak out your Dad 

1) Two words: cross-dresser

2) First time driving your father somewhere - psychotic swerving syndrome

3) Get your first Tarot reading book

4) When the conversation at dinner gets silent, suddenly bust out in a monotone high-pitched laugh, and then get up and leave

5) Ask for condoms

6) Self pierce your nose with a safety pin

8) Come to him and cry that you've got your fingers stuck in Chinese Handcuffs
(For people of  the older grade)

9) Be completely silent and when he asks why, write on a piece of paper " I am not speaking for 3 years to better understand my surroundings"

10) Dye your body blue before an important event, and act like there's nothing wrong with it