Kegel muscle trainer?

Hi,

I accidentally found this “toy”:

https://images-na.ssl-images-amazon.com/images/I/41Btsi75KKL._AC_SY1000_.jpg

I wonder if I misunderstood the position of the muscles perhaps? That thing looks like you have to squeeze the buttcheeks…. would that be a part of muscles used in males for prostate play? Similar to that I noticed another set of muscles being active if I barely hiptrust up while sitting.

Perhaps I got a big misconception with my internals? 🤣