How I learned to M

I learned to masturbate as a pre-teen in a highly unusual way. Basically I would lay on my stomach and press something (sometimes a rolled shirt or a hard object) into the crease between the base of the penis and the pelvic bone. Obviously I would have to be completely flaccid for this to happen. When I started getting erect I would wait for the erection to subside then continue with the practice until orgasm. Eventually I started started laying a folded towel on the corner of the counter and pressing the corner into the area. I dont know exactly how that induces orgasm.

Thinking back it's horrifying to think of the damage i was doing. Not on the potential physical damage to the tissues from the immese pressure on the tendon and fascia, but the mental programming to associate pleasure and orgasm with a completely flaccid state, and the damage of ejaculating with that much pressure on a bent and flaccid penis.

Did anyone else ever do something similar? I eventually learned to masturbate normally, but Ive never had good erections. They always go away immediately after I stop stimulating. I'm going through the DCT for hard flaccid program to hopefully address any physical damage.