My suggestion is to play it nice, never know when some tweaked out bitch can stick you with a needle that she's shared with everyone in the ghetto.
If you wanna get out your frustration, try doing in subtle ways, so thinks your just a self centered dick, not that your malicious.
Some Ideas- Try throwing parties when she sleeps
- Say your learning German, and play those educational German CD's loudly, at weird hours.
- Get into an avant garde phase and start putting up weird art, shit that's disturbing.
- If your allowed to paint your walls, put a giant KATG mural in the living room.
- Set every alarm and timer in the house, conveniently forget.
- Make ramen in the bathtub, or pudding.
- Change all the light bulbs to very high wattage, brightness is the junkies enemy.
- Take a small piss into her shampoo/conditioner. Do not put in Nair, that shit burns, and she'll know.
- Keep asking her for annoying, pointless favors.
- Say your pregnant and start making crazy baby plans.