When I get really horny I go in my bathroom, turn on the tub faucet to drown out the noise, turn on my electric toothbrush, and aim it right on my clit. Next, I take a curling iron and stick it up my pussy. If I'm still horny, I take a hairbrush and stick it up my ass. Fuck the curling iron for a bit and you'll get the best orgasm ever.
Another way of doing it is a back massager. I aim it right on my clit. (I know it might be a little intense but KEEP IT THERE!) It will give you an orgasm in about two minutes.