Làm việc thân mật từ Châu Á

You can tickle them and scratch them a bit.

You may juggle them or tap on them gently with your fingertips.

For some men this is a very great pleasure, for others it's rather unpleasant, so always

watch your recipient, how he reacts to it.

So if he is breathing deeply and steadily, you know that he is in a good state.