i was masturbating very hard and than i stopped because i heard my mom approach the entrance of my house, and i was lucky enough to not get catched while masturbating. But when i checked my penis i saw some skin (you know, the white skin that can be sometimes found in the nails area, more like the superior part of the skin trying to fall down) on the "backyard" (you know, the inside of the foreskin near the part where the frenulum connects to the rest of the penis)... can this be caused by masturbating too hard? can i continue masturbating or my sensibility is at risk? i think not, but i need an answer