This seems like the perfect device for someone in need of some anal training.
It's a dildo with a suction cup which enables it attach to a shower wall. Because it's fixed you can take things at any tempo that suits you, and because it's in the shower you don't have to worry about mess. Among other benefits this means you can learn about the best way for you to prepare.
If you share the bathroom with someone who doesn't share your interests you just take it with you when you leave the room (the long showers and cries of ecstacy might take some explaining though).
Mine came from Fun Factory but there's plenty of choice. Read some reviews on line and pay attention to shape, material, and grip.
And use plenty of lube! Enjoy
