Toddlers - learn the art of the rigidly stiff body. Render yourself so stiff that any putting on or off of clothes or into high chair/car seat - is impossible.
Take Mummy's rabbit or other sex toy into show and tell.
When you write about what you did at the weekend, never ever mention the library or the museum or any wholesome activity, just write "We went to the pub" Pub is easy to spell.
Make personal remarks at the top of your voice:
That man is bald
that lady is fat
That man has a big nose
These strangers will think you are a darling.
Teenagers - remember to let your phone run out of battery whenever you are out and your Mum needs to call you.
Teenagers - if your Mum has asked you to do something (like get out of bed) more than 11 times and raises her voice - remember to tell her there is no need to shout.
Teenagers - limit your use of technology to phones, computers and ipods. Do not touch washing machines or any other household applicances.
And finally, the big one - Teenagers - money really does grow on trees - your parents are kidding if they tell you otherwise.