i've taken part in this (as the receiver) it's not as bad as it sounds...i enjoy it, probably too much
I've attempted triple, not really for pleasure, but just to try it...it kinda worked but it's really hard for the tops to get in good positions. double isn't nearly as hard to do
Done double anal with the ex. Me and a dildo. We also tried me and a dildo in her ass while she used another on her pussy. Didn't work to well. Man I should really hook up with her again.
You don't have to be a porn start to do double anal. If your relaxed and use lots of lube you can stretch that hole pretty big. Go slow and enjoy. I belive that the size of the dicks doing the deed would have an impact. My ass can accomadate alot and so can my wifes when she is really horned up