I have been a sub, a slave, a bitchboi for a special event. I have served various types/styles of Domme. Some of whom would use techniques to change or simply mindfuck the bitchboi/cumslut/sissywhore. No longer realizing their desire and accepting submission, with still being able to say no . Well, those techniques were in part using hypnotherapy but the other part i cant put in words. However a tool like this straw and used where it is here, among other places aided in introducing other parts very useful for turning a subbie into a mindless s l a v e and remove no from their brain. There's more than one purpose though and type of things that can be introduced. Quite frankly the first time a Domme inserged a glass tube in my duck and then blew into it.... it caused the erection i had to grow more. About 15% more and already being above average, it cause Goddess to gasp. So in this clip im not saying there is anything wrong going on but in general if you are using a hollow sound, its to be able to put something in
The urethra is longer that 12 inches (~30 cm) and then enters the bladder. But the entry into bladder is narrow and there is a bending. So only flexible toys can go into bladder. The steel rods can just go beyond the prostate. Here the rod and the straw looks like 20~25 cm, which can perfectly fit inside (depends on cock size too)