Anal masterbation

[science10]

any tips on how to anal masterbate how far do you stick ur finger?

[Kujiro]

Im not sure of the details but you can try to google on postrate milking hope it helps.
I've never personally tried it but a nurse friend of my told me a little of it.

[Scarface]

Asking for techniques is not allowed on VT, Google will be your best option man.