
It doesn’t work like that but the more you have anal, the easier it is for your muscles to almost instantly relax and accommodate whatever is being shoved in. Also, the deeper you go, the looser it actually is on the inside. It’s really only the first maybe 3 inches that is tight and needs to be stretched enough but you can pretty easily Pavlov an asshole to open up. The same is true for vaginas but those are (usually) naturally super self lubricating although the ass is also self lubricating, just less so.

my favorite thing about this is how you verbified "Pavlov," thank you for the giggle and the educational content
rectums are kind of self-lubricating but anuses aren't so i don't think that's enough to avoid things like anal fissures and hemorrhoids... maybe super-dedicated butt spelunkers can do it, idk i haven't interviewed any personally

Hehe I love using philosophies and proverbs as verbs like “oh he newtoned himself to death” (≧∀≦)
Oh it absolutely isn’t lubricated enough. But if you somehow managed to get through the first few inches without excruciating pain and ripping then you’re kinda okay? Also you can just slowly put it in even if you’ve just got lube and no prep. It’s kinda weird. Basically all muscles can be trained to tense/relax depending on certain conditions. It’s the same as how you tense certain abdominal muscles (fun fact! It’s the same ones you use to shit!) to orgasm.
"it should be fine to force the rest in. he's loosened up enough not to tear." we all know that's NOT how butts work irl, right? right?!
plz i can't focus on rubbing one out until i get reassurance ಥ╭╮ಥ