Once upon a time I made up my own vibrator which was a little electric motor held on my dick by a rubber band with a off centre weight on the end of the motor. When just about to cum the rubber band moved & the motor slid forward with high the speed weight connecting with my knob & taking a fairly good knick out of it. Oouucch
You shouldn't come here all turned on after watching Shemale porn, that was something I didn't think I would ever share with anybody