What about things like kegels/squeezing?
Mouths are probably pretty different right? More tongue movement, unless you are facefucking.
If you’ve ever participated in something like a train - can you feel the difference between a vagina that has already been fucked?
There’s some early exploratory research that suggests trans men on testosterone might develop some prostate cells. I did have a guy that could make me cum regularly from anal, and I don’t really cum from vaginal. Clearly I need to do further research and let more guys use my ass.
Yeah, get that exploration in!!