>>82420609 (OP)
The barrier between the ass and vsgina is elastic when you fuck a girl in the ass you're basically pushing her g spot against the walls of her pussy
If you've got a big dick obviously it's why girls who like anal fuck massive toys
>>82420980
i cant tell but is the cock in the gif big or normal, i think mine is bigger so if he is making her squirt like that then maybe i could too?
>>82420609 (OP)
Just aim it at a diagonal towards the pussy and try grinding the length against it from the inside. Also pull completely out every once in a while. The muscle sometimes tenses a bit too much or air gets trapped in an uncomfortable way and it helps when that happens. Think of it like a car seatbelt. Sometimes it locks up and has to retract completely before it will release again.