1. Insist they need a diet and charm their fridge to only give them a certain amount of healthy foo each meal. Do cabinets as well.

    2. Send them post on Sunday's. Put it in your post-box yourself or owl them.

    3. Compliment Harry.

    4. Make the house a mess then, then tell Petunia her house is a mess.

    5. Ask Petunia why she isn't a witch.

    6. Talk about Dementors.

    7. Get them, especially Dudley a pet pig.

    8. Say you'll get Vernon a pet pig to 'keep theirs company, oh wait that's just your son Dudley'

    9. Threaten pig ears to match the tail.

    10. Say anything about magic.

~District_Gryffindor