My m○m used to do this on my big boy cock to stretch out my tight foreskin while counting down from 100 up down stretches. She used steroid cream and after I squirted clear cum out one time before 100 stretches she told me I need to practice getting to 100 up down when i play with my self and after that she would use numbing spray and so I wouldn't get over stimulated. Now I always count down from 100 when I play with myself if m○m is there or not. She always just says to "don't slow down" and "go all the way up and down or they wont count" bla bla bla