@KeyboardWarri0r69 Okay soooo!! The tissues around the ∆nus are made of muscle and connective tissue so they can stretch to a degree that's similar to how muscles elsewhere in the body can become more flexible with repeated, gradual stretching. :0 The key word is GRADUAL!!!! People who are able to accommodate very large objects typically do so by: →1! Starting with small sizes and increasing very slowly over long periods of time. (Ig that's not the case here) →2! Allowing the muscles to relax rather than forcing them open. The two ∆nal sphincters naturally tighten, but they can learn to relax more easily with experience. →3! Giving the tissue time to adapt between sessions. Connective tissue can become more flexible over time when stretched repeatedly and gently. Kinda like a hairband or smth like that ig →4!!! Using plenty of lub3 to reduce friction and allow the tissue to move more easily. So think of it less as "stretching like a balloon" and more like improving flexibility through regular practice, similar to how someone might gradually master a sport or some skill. !!!There are still limits though and bodies vary a lot from person to person!!! What one person can comfortably accommodate may be impossible or unsafe for someone else. That applies to basically anything in life :/ So these people usually spent a very long time training their bodies, and what you see in BL or online is often exaggerated or not representative of most people's anatomy!! (Duh) [I love educating ppl about yaoi/anatomy >u<]