IIRC, Rimuru technically could do this, he just figures trying to replicate sexual organs would be more trouble than it was worth since he'd have to manually morph all that instead of letting his ability do it. Think of it like having an ice cream machine vs having to make your ice cream by hand every single time you wanted ice cream. With how often he morphs between slime and human form, that would become a PITA amazingly fast.
I don't know if people actually get an erogenous reaction from touching that internal part of the anatomy (since supposedly the nerve endings for most of that sensory stuff go closer to the bottom of what is shown there in the lower right frame). Does this slime being just want to check out how that stuff works maybe?
Considering how people who had to be awake for surgery describe it: No way. It's supposed to feel slimy and weird, like touching an eel, but also like when your stomach is grumbling. So, mostly slight pain and discomfort.
Oi. You still haven't had sexual ed in high school yet? Never mind sex ed, are you taking biology?
In high school Once had a guy try to “show off” his sexual prowess and luck with the ladies by telling these crazy stories of these adventures where he made girls squirt cum out their ass and like...somehow had sex with her bladder or something? I dunno. It was weird
Point is, you’d be surprised how many people even though who are “experienced” don’t know simple stuff like “baby hole and pee hole not the same”
In high school Once had a guy try to “show off” his sexual prowess and luck with the ladies by telling these crazy stories of these adventures where he made girls squirt cum out their ass and like...somehow had sex with her bladder or something? I dunno. It was weird
Point is, you’d be surprised how many people even though who are “experienced” don’t know simple stuff like “baby hole and pee hole not the same”
We learned these super basic things about human biology in what consists of elementary school here...