Anal Trainer: The Anal Dilator With A Purpose
2. Anal Trainer; The anal trainer, also called an anal dilator, is a type of toy designed to "teach" the ass to stretch open and stay open, by usually having a larger base that maintains the "gape" of the opening. Some anal dilators are designed like a penis to also "teach" the anus about the way the sphincter will open and close around the head of the penis. An anal trainer, like the ones on the left, may slip out of the anus because they are about the same diameter all the way to the base. Wearing a thong is one way to keep them in place. Sitting and squeezing is another way to keep an anal trainer in place and teach your anus to relax and stretch.
Compare the picture below to the standard butt plug you have seen. Butt Plugs are more Christmas tree shaped, with a very small neck, that allows the anus to close after the butt plug is inserted. An anal dilator, is designed differently – with a wider neck that keeps the anus open and stretched.
[Squeezing is one way to teach the anus (and the vagina) to accept and get used to objects. Since you are squeezing with an anal trainer toy in place, your anus is unable to close all the way and after each squeeze, your anal muscles tend to relax more and more].
BTW, I love to include Wikipedia whenever I can!
A rectal or anal dilator is a medical device to open and relax the internal/external anal sphincter and rectum to facilitate medical inspection or relieve constipation
Really, what could they say. How about this? "A rectal or anal dilator is a medical device to open and relax the internal/external anal sphincter and rectum to facilitate MORE COMFORTABLE ANAL INTERCOURSE AND TOY INSERTION. Wiki rejected my change suggestions.