Very bad? Come on, you're used to it
get up, loosen both laces, massage a little, and give me 50 strokes too.
Goes better?
Now sit down again, do not over the balls keep them free and under your cock, but make sure that your balls are in contact with the surface, now rest on both hands above, put them as I am right now, now begin to crush them on the surface, crush them well, make sure to crush them in full, and rest on the whole weight of your body, even raise your legs read just do not touch the ground, to remain poised on the balls, do so until you can hold them up then lean to resume the balance, but never stop crushing with your hands.
Now that you understand how to start you start to crush with all the strength and weight of your body, go on like this for as long as you can, try to stay as long as possible, as much as you can, take the time.
You know I have to tell you that this position and method of squeezing is my absolute favorite, so you're busy as much as you can.