How does a man like his penis rubbed if he's wearing pants?

If you mean masturbate, then you can do it moderately as you please. Just as long as it doesn't interfere with your daily routine. But, if you over do it, then your penis may become raw and uncomfortable for you. If this happens, then you should lessen the amount that you masturbate. But you can masturbate as much as you please!

Masturbate it by sliding your hand up and down it really fast it will make you horny and you will ejaculate.