This is me, a 62 yr. old bi-mwm who enjoys daily masturbation and an occasional urethral insertion.  Its a small cock tho and even pumping it doesn't add much to it.  But ya know what?  I've had only one complaint cuz I know how to use my cock, my hands and my mouth and I don't hesitate to do so!  I also enjoy a certain amount of self-inflicted pain!