You ladies are killing me...can you have a talk with my wife ?
There are so many nerve endings in and around the anus that when stimulated correctly, during the height of passion, will send us guys flying.
But we have to be willing participants...I am ! But, she's not. Though, we did fool around in this region a few years ago, she backed off I think when she realized how much I enjoyed it. Maybe subconciously, she thought I enjoyed it too much, and would want more and more, leading up to penis sized dildos or a real penis !
Some day !!