Inemex7--see the discussion about the Hoodlum 22" double ended dildo from lovehoney.com. It may be what you are looking for.
hankb
Loveitkinky Loveitkinky
p : 1254
E&L : 38
Here's a link to the dildo for sale from lovehoney's US site http://www.lovehoney.com/product.cfm?p=31082
Here is what I had to say about it.
I broke down and bought the Hoodlum 22" double ended dildo. It is an impressive thing to behold with one end being about 1" dia. and the other about 2" dia. , its 22" length and the detail of the ends and the veining. I tried putting the small end in first and was able to get it to go in about half way. Then I put in the big end, and when it was in, I knew it.
However, it had its problems. I lubed my anus first with crisco (today I used hand lotion), which worked fine, but the problem is that the thing is so flexible that it is difficult to get it to go in, and after it is barely in and I have to move my hand down its length to get another few inches in, it comes out and I have to start again. After a while, I have grease on the shaft and my hand and it is difficult to grip it and put it in. My feeling is that it is inherently difficult for one person to put in himself and it would be better to have someone else put it in instead, but I do not have anyone else, so I have to struggle.
Once the small end is in, you have to hold on to it and keep it from coming out on its own, so you cannot just relax for a while. The big end is pretty good about staying in.
It is a pleasure to move it back and forth and pleasure the anal nerves.
After a couple of insertions, I drilled a hole down its length and it is now an enema nozzle. If you put it in and run some water in, it goes in the rest of the way a lot more easily. After you have at least one quart, preferably, closer to two quarts, you can easily put it in its full length, leaving just the head sticking out so that you do not risk its getting stuck inside and having to make a trip to the ER. You can easily move it in and out and enjoy not only the feeling in your anus, but also feel it moving too and fro in your colon, which is an enjoyable and novel experience.
Incidentally, drilling a hole in it and making it an enema nozzle does not take away from its working as a dildo as originally intended.
hankb