3 images is all I have. If I could create webms on mobile i'd have much more to start the thread. There are a lot of quality videos on xtube.
It is, I've done this myself, and the problem is usualy that your ass isn't open enough for it to properly insert as limp. Really stretch that ass to get it in. Also, dont apply lube to your entire dick, or else it will slip in your fingers and you won't be able to push it in.
My dick size is pretty average, but the trick is to twist it when it is at a perfect chubby so that it turns the other way around before you insert it. It will take some time before it gets in because it has to be stretched a bit as well.
Actually sort of intrigued by this. Not that I want to try it but how does it work when you cum. I get much harder before I shoot and it probably wouldn't stay in. Interesting idea though, get fucked with 0% chance of catching a disease. At least not a new one.