Almost there, but not quite...

Ruby

When I masturbate I either use my fingers or a separate toothbrush attachment (it's electric 😉). Using either tool it starts to feel really good. I got kind of tensed up and start to feel a bit tingly, usually in the butt/backside area. This lasts almost a minute, maybe less usually. Any advice to help finish the job? My toothbrush does vibrate but it doesn't cover much area so it's not super helpful.