all couples want the same thing: so that the vagina of the girl is at the same time narrow and at the same time can take a huge objects. seemingly this conflicting desire. but in fact the healthy muscles of the vagina are both strong and resilient. so usually a girl who "can fuck a horse dick" is also able to "hold a needle". a well-trained cunt can suck and milk your dick, can squeeze it so that you can not cum. can control the whole process.
that's why i created the #hwcoach. but I did not immediately come to this. early prototypes were only in the form of an inflatable dildo and was not have a pressure gauge. because mostly they were bought by girls who loved cuckhold sex with black guys who are known for the inadequate size of their sexual organ )