How long can you stand the vibrations and withhold your cum? I think I would shoot my load right away...

This picture was taken some years ago; back then this vibe would get me off quickly if I let it. So, a year or more after I could no longer get off at all with my or my wife's efforts I thought I would try this again... just for ol' times sake. And... nothing. It didn't stir even the slightest sensual feelings. Now I know.