Not just doing sex - there is more to it than that. Extended submission to a Lady can so much fun as long as the relationship is consensual, sane and safe. Oh and the most important part LOVE
That electric calculator was a big deal. Our office had ONE - for special projects. Every mostly used hand crank calculators.
And yes I know how - well maybe not anymore - how to use a slide ruler and slide disc.
I'm more into sensual domination, not that there can't be some pain. The Lady that play with does enjoy tormenting my dick and balls. But along with that there is also a lot tease and denial - easy for her to do since I have a boob fetish. Oh and then there are my nips who can take quite a bit.
But at the end there is always cuddle time and sweet talk.