Mine is of my cum-heavy balls. i am a sex slave, denied orgasm, but teased mercilessly into masturbating, for the sole purpose of saving cum until my Princess, the fleshlight, decides it's time to empty me.
It's a much more Heavenly and purposeful way to masturbate, for me.
Edging is amazingly intense, and clamping down the muscles on that urge to squirt, can be such a fight! That is what my Sweet Princess loves most about me.......how hard i fight, to save Her cum!